CN217114718U - Pole for large battery - Google Patents

Abstract

The application discloses utmost point post for big battery, be equipped with the pore in the utmost point post, the export setting in pore is in the outside that utmost point post is outstanding battery case, the pore inner loop has hot/cold fluid. When the temperature of the battery cell is too high, cold fluid can be injected from the inlet pipe; when the temperature of the battery core is too low, hot fluid can be injected from the inlet pipe, so that the battery can work in the optimal temperature range.

Description

Pole for large battery

Technical Field

The application relates to the technical field of lithium batteries, in particular to a pole for a large battery.

Background

In recent years, lithium battery technology has been rapidly developed and has been used in more and more fields. However, due to the principle and structural characteristics of lithium batteries, heat is often generated due to internal resistance and other reasons during repeated use, so that large heat is generated, and the heat is gradually increased. If the accumulated heat cannot be effectively dissipated, the stability of the battery in use is affected, and the service life of the lithium battery is shortened. When the temperature is further raised, the electrolyte, the solvent and the anode and cathode materials inside the electrolyte can be decomposed, combusted and exploded. Low temperatures can reduce the conductivity of the electrolyte, reduce the ability to conduct active ions, increase impedance, and reduce capacity.

At present, a heating or cooling method for a lithium battery is to arrange a heating or cooling device at a battery shell part, and although a certain heat dissipation effect can be achieved, heat still cannot be directly conducted out of the battery from a main heating part pole, and the heat conduction and heat dissipation effect is poor. Therefore, research on a new lithium ion power battery is urgently needed.

Patent number CN202110527778.8, a utmost point post structure and large capacity battery disclose an utmost point post structure and battery, and this utmost point post structure includes: utmost point post body, the terminal and the heat conduction unit of being connected with utmost point post body. Wherein, it is provided with at least one opening to open on the above-mentioned terminal, and above-mentioned heat conduction unit passes at least one opening and this body coupling of utmost point post, and above-mentioned heat conduction unit laminates with the inner wall of every opening respectively. The heat conduction mode of the pole is to insert the heat conduction unit into the through hole of the pole, the heat conduction unit can be a heat pipe, but the heat pipe has high cost and can conduct heat only by being matched with a refrigerating or heating device.

Patent No. CN201710503690.6 discloses a lithium ion power battery, which is characterized in that both the positive plate and the negative plate are provided with heat conduction and heat collection bodies, the heat conduction and heat collection bodies are current collectors having active material layers not coated on the front part or/and the back part of the positive current collector and the negative current collector, at least two or more heat conduction and heat collection bodies are stacked to form a heat collection flow channel, the heat collection flow channel is stacked or connected with a fluid flow channel component, and the inlet and outlet of the flow channel of the fluid flow channel component are respectively arranged on the lower side surfaces of the positive pole or/and the negative pole. The battery temperature control system can effectively solve the problems of overhigh or overlow battery temperature and the like, and achieves the effects of controlling temperature, prolonging the service life of the battery and the like. The patent arranges fluid channels in the positive and negative terminals and the battery, and the structure is complex and not easy to realize.

Disclosure of Invention

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the application discloses utmost point post for big battery, be equipped with the pore in the utmost point post, the export setting in pore is in the outside that utmost point post is outstanding battery case, the pore inner loop has hot/cold fluid.

Further, the duct is a U-shaped duct. The lower ends of the U-shaped pore passages are communicated through a bottom groove, and the bottom groove is sealed through a plugging piece. The outlet of the U-shaped pore passage is respectively provided with a groove for placing an inlet pipe or an outlet pipe, and the outlet of the U-shaped pore passage is respectively connected with the inlet pipe and the outlet pipe; the hot/cold fluid flows from the inlet pipe into the port and out of the outlet pipe. The hot/cold fluid is one or more of dry air, high-purity water, cooling liquid and heat conduction oil.

Further, when at least two poles are provided, the outlet pipe of the first pole and the inlet pipe of the second pole between the adjacent poles are communicated through the connecting pipe.

Further, the heat exchanger also comprises an external heat exchanger; the heat exchanger is respectively connected with the inlet pipe and the outlet pipe of the pole to form fluid thermal path circulation.

Furthermore, the upper end of the pole is provided with a connecting thread.

The utility model provides a utmost point post pore structure, processing is simple, one shot forming, and the pore upper end is fluted, and the lower extreme has a block structure, has import pipe and the outlet pipe that links to each other with the pore on the recess. When the temperature of the battery cell is too high, cold fluid can be injected from the inlet pipe; when the temperature of the battery core is too low, hot fluid can be injected from the inlet pipe, so that the battery can work in the optimal temperature range. The cold/hot fluid directly enters the battery in the technical scheme, and the heat exchange efficiency is high.

Additional advantages, objects, and features of the application will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a pole.

Fig. 2 is a schematic view of a pole with an inlet and an outlet.

Fig. 3 shows the lower end closure of the pole.

Fig. 4 is a schematic view of the connection of adjacent pole ducts.

Fig. 5 is a schematic view of the connection of a plurality of post ducts with a heat exchanger.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

The technical solution of the present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 3, the application discloses a pole for a large battery, wherein a pore passage is arranged in the pole 1, an outlet 31/41 of the pore passage is arranged on the outer side of the pole 1 protruding out of a battery shell, and hot/cold fluid circulates in the pore passage.

Optionally, in the embodiments provided in the present application, the duct may be configured into different shapes according to actual requirements, and preferably, the duct is a U-shaped duct.

Further, as shown in fig. 3, the lower ends of the cells communicate through a bottom groove 5, and the bottom groove 5 is sealed by a plugging member 6.

Further, a groove for placing the inlet pipe 3 or the outlet pipe 4 is arranged at the outlet 31/41 of the U-shaped pore passage, and the outlet 31/41 of the U-shaped pore passage is connected with the inlet pipe 3 and the outlet pipe 4 respectively; the hot/cold fluid flows from the inlet pipe 3 into the cells and out of the outlet pipe 4.

Namely, a pore passage is arranged in the pole 1, and a groove 3/4 is arranged at the outlet of the pore passage. The lower end of the pole 1 is provided with a bottom groove 5, wherein the bottom groove 5 is sealed by a sealing piece 6, so that the pore canal forms a circulating fluid passage.

Optionally, the hot/cold fluid is one or more of dry air, high purity water, cooling liquid and heat conducting oil.

Further, as shown in fig. 4 and 5, when at least two poles are provided, the outlet pipe of the first pole and the inlet pipe of the second pole between the adjacent poles are communicated through the connecting pipe 7, so that the circulation cooling or heating of the multiple poles is realized, and the heat exchange efficiency is high.

Optionally, the system further comprises an external heat exchanger 8; the heat exchanger is respectively connected with the inlet pipe and the outlet pipe of the pole to form fluid thermal path circulation.

Optionally, the upper end of the pole is provided with a connecting thread.

The working principle of this application does:

when the cell temperature of the battery is not in the optimal temperature range, the cold/hot fluid can enter the pole cylinder body 1 through the inlet 3 and exit from the fluid outlet 4 so as to cool or heat the pole column, so that the cell temperature reaches the optimal temperature range, and the cold/hot fluid is preferably heat-conducting oil.

Although the embodiments of the present application have been disclosed above, they are not limited to the applications listed in the description and the embodiments. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the application is not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (8)

1. The pole column for the large battery is characterized in that a hole channel is arranged in the pole column, an outlet of the hole channel is formed in the outer side, protruding out of a battery shell, of the pole column, and hot/cold fluid circulates in the hole channel.

2. A post for a large battery according to claim 1, wherein said hole is a U-shaped hole.

3. A post for large battery according to claim 2, wherein the lower ends of said U-shaped channels are connected by a bottom groove, and said bottom groove is sealed by a sealing member.

4. A pole for large battery as defined in claim 3, wherein the outlet of the U-shaped channel is provided with a groove for placing the inlet pipe or the outlet pipe, respectively, and the outlet of the U-shaped channel is connected with the inlet pipe and the outlet pipe, respectively;

the hot/cold fluid flows from the inlet pipe into the port and out of the outlet pipe.

5. A large-battery pole according to claim 4, wherein the hot/cold fluid is one of dry air, high purity water, coolant, and thermal oil.

6. A pole for large battery as defined in claim 1, wherein, when there are at least two poles, the outlet pipe of the first pole between adjacent poles is connected to the inlet pipe of the second pole through a connecting pipe.

7. A pole for large battery as claimed in claim 4 or 6, further comprising an external heat exchanger;

the heat exchanger is respectively connected with the inlet pipe and the outlet pipe of the pole to form fluid thermal path circulation.

8. A pole for large battery as defined in claim 1, wherein the upper end of the pole is provided with a connecting thread.

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