CN204407372U - Secondary battery pack with protective function - Google Patents

Abstract

The utility model relates to a secondary battery group with safeguard function, it includes a group battery, the both ends of group battery are equipped with a conductive part respectively, and a lead wire of each conductive part each electric connection, with through lead wire electric connection external device and power supply to external device, be equipped with an accommodation space in the casing with the holding group battery, and a protective layer fills up casing and cladding group battery and exposes the lead wire, wherein the protective layer is solid-state when the normal atmospheric temperature, then can melt for liquid during the high temperature, use protective layer isolatable group battery and external environment, the protection group battery can effectively conduct heat. Therefore, the utility model discloses the heat energy of accessible wax membrane coated battery group can guide the group battery and absorb the heat energy of group battery to isolated outside air, when avoiding the group battery high temperature with the oxygen contact burning in the air and explosion, with the protection group battery.

Description

Secondary battery pack with protective function

technical field

The utility model relates to a secondary battery pack, in particular to a secondary battery pack with protection function which can isolate the battery pack from the external environment.

Background technique

The so-called secondary battery refers to a battery that can be recharged and reused after the battery's electric energy is consumed. In recent years, due to the development of green energy, many locomotives, automobiles and large-scale machinery no longer use gasoline to start, but instead use electric energy to start. However, locomotives, automobiles or large-scale machinery all require a large amount of power to start. In order to make the secondary battery generate large power, it is necessary to connect multiple secondary batteries in series when using them, and connect the conductive terminals of multiple secondary batteries through conductive sheets. Multiple secondary batteries can be connected in series to form a battery pack to provide greater power.

However, if the battery pack is used in a vehicle or a large machine, the vehicle or large machine may be exposed to the sun or exposed to wind and rain, and the battery pack inside the vehicle or large machine may leak electricity due to moisture. If the vehicle or large machinery is located in a sub-zero temperature environment, it is likely to cause the battery pack to freeze, resulting in the battery pack being unable to generate electricity, or causing leakage, etc. In severe cases, the user may be injured due to battery pack leakage or explosion. Furthermore, the battery pack may generate high temperature due to improper internal discharge. If the heat energy cannot be properly discharged, the battery pack may explode. Therefore, it is very important to protect the battery pack from being damaged by the external environment and to effectively dissipate heat.

In view of this, the utility model proposes a secondary battery pack with a protective function to effectively overcome the above-mentioned problems.

Utility model content

The main purpose of this utility model is to provide a secondary battery pack with a protective function, which can absorb the heat energy generated by the battery pack, and can guide the heat energy in the battery pack to the outside, so as to avoid excessive temperature of the battery pack, and can Isolate the outside air and water vapor to prevent the battery pack from getting wet, and in addition to achieve the purpose of antifreezing.

Another object of the present utility model is to provide a secondary battery pack with a protective function, which has a simple structure, high production efficiency and relatively low production cost.

In order to achieve the above object, the utility model provides a secondary battery pack with a protective function, which includes a battery pack, two ends of the battery pack are respectively provided with a conductive part, and each conductive part is electrically connected to a lead wire, a The housing is provided with an accommodating space in the housing to accommodate the battery pack, and a protective layer, which fills the housing and covers the battery pack and exposes the lead wires. The protective layer is solid at normal temperature and can be Melted into a liquid state, the use of a protective layer can isolate the battery pack from the external environment, protect the battery pack and effectively conduct heat.

Describe in detail below through specific embodiment, when more easily understand the purpose of the present utility model, technical content, characteristic and the effect that it achieves.

Description of drawings

Fig. 1 is the perspective view of the utility model;

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

Fig. 3 is a three-dimensional exploded view of the utility model;

Fig. 4 is a perspective view of the battery pack of the present invention.

Description of reference signs: 1-secondary battery pack with protective function; 10-battery pack; 12-conductive part; 14-lead wire; 16-secondary battery; 16'-secondary battery; 16"-secondary battery; 162-conductive terminal; 164-vent valve; 18-conductive sheet; 20-fixing element; 22-first fixing frame; 220-piercing hole; 24-second fixing frame; 30-protective layer; - housing; 42 - accommodating space.

Detailed ways

Please refer to Fig. 1 and Fig. 2, as shown in the figure, the secondary battery pack 1 with protection function includes a battery pack 10, and two ends of the battery pack 10 are respectively provided with a conductive portion 12, and each conductive portion 12 is electrically connected to A lead wire 14; a housing 40, the housing 40 is provided with an accommodating space 42 for accommodating the battery pack 10; a protective layer 30 fills the housing 40 and covers the battery pack 10, so that the battery pack 10 only exposes the lead wire 14 Outside the protective layer 30 , the battery pack 10 is electrically connected to an external device (not shown in the figure) through the lead wire 14 to supply power to the external device. In this embodiment, the material of the protective layer 30 is wax. Therefore, the protective layer 30 is solid at room temperature, and can be melted into a liquid at high temperature. The protective layer 30 is used to completely cover the battery pack 10, which can isolate the battery pack 10 from the external environment. temperature, to prevent the battery pack 10 from freezing when the external ambient temperature drops below zero degrees Celsius, and using the protective layer 30 to coat the battery pack 10 can also effectively isolate water vapor, prevent the battery pack 10 from being wet, and isolate external gases such as oxygen Such as flammable gas contact with the battery pack 10, to avoid the battery pack 10 when the temperature is too high to contact with oxygen to produce chemical reaction and burn to cause explosion. In addition, since the protective layer 30 will melt into a liquid protective layer 30 when the temperature is between 46°C-90°C, so when the temperature of the battery pack 10 exceeds 46°C-90°C, the protective layer 30 will melt, While melting, it can absorb the heat energy of the battery pack 10 to prevent the temperature of the battery pack 10 from being too high. Of course, when the protective layer 30 melts, it can also continuously isolate the external temperature, water vapor, air, etc., so as to avoid the contact with oxygen when the temperature of the battery pack 10 is too high. Contact produces a chemical reaction which may result in an explosion due to combustion. Furthermore, since the shell 40 is a metal shell, this embodiment is an aluminum shell, and aluminum has high heat conduction efficiency, so the shell 40 in this embodiment is matched with the protective layer 30, which can effectively dissipate the heat absorbed by the protective layer 30. Heat energy, greatly improving heat conduction efficiency.

Next, please refer to FIG. 2 and FIG. 3 to illustrate how to cover the battery pack 10 with the protective layer 30. As shown in the figure, the battery pack 10 is first put into the accommodating space 42 of the casing 40. The material of the protective layer 30 is a wax film, so when making the secondary battery pack 1 with a protective function, pour the heated and melted wax 30 ′ into the casing 40 to fill the accommodating space 42 of the casing 40 and Cover the battery pack 10 but expose the leads 14 , and finally wait for the wax 30 ′ to cool and solidify to form a wax film, that is, the protective layer 30 to cover the battery pack 10 .

Next please refer to Fig. 2 and Fig. 4, to illustrate the structure of the battery pack 10 of the present invention, the battery pack 10 includes a plurality of secondary batteries 16, a plurality of secondary batteries 16 are arranged side by side with each other, and each secondary battery 16 is respectively There are two conductive terminals 162, and each secondary battery 16 is also provided with a gas release valve 164 between the two conductive terminals 162, which can release the internal pressure of the secondary battery part 16 and prevent the internal pressure of the secondary battery 16. Excessive pressure causes the secondary battery 16 to explode; wherein a plurality of secondary batteries 16 are arranged side by side in series to form the battery pack 10, and the way of series connection is to connect the conductive terminal 162 and the conductive terminal of the adjacent secondary battery 16 through a conductive sheet 18 162 connection, but one of the conductive terminals 162 of the first row of secondary batteries 16' and the last row of secondary batteries 16" is not connected to the conductive terminal 162 of the adjacent secondary battery 16, and the conductive terminal 162 that is not connected to the adjacent secondary battery 16 The terminal 162 is used as the conductive part 12 of the battery pack 10. The above-mentioned conductive sheet 18 uses a fixing element 20 to lock the conductive sheet 18 on two adjacent conductive terminals 162 to connect multiple secondary batteries 16 in series. The fixing element 20 Stainless steel bolts are available.

In addition, the battery pack 10 also includes a first fixing frame 22 and a second fixing frame 24, which are respectively arranged on the upper and lower ends of the plurality of secondary batteries 16 to fix the plurality of secondary batteries 16, wherein the first The fixing frame 22 is arranged on one end of the plurality of secondary batteries 16 provided with the conductive terminals 162 and the vent valve 164, and the first fixing frame 22 is provided with a plurality of perforations 220 to expose the conductive terminals 162 and the vent valve 164, and the second The fixing frame 24 is arranged on one end of the plurality of secondary batteries 16 that are not provided with the conductive terminal 162 and the gas release valve 164. Using the first fixing frame 22 and the second fixing frame 24, the plurality of secondary batteries 16 can be arranged side by side and fixed, so that Cover with protective layer 30.

In summary, the utility model can absorb the heat energy generated by the battery pack, and can guide the heat energy in the battery pack to the outside, which can prevent the battery pack from being overheated, and the utility model can isolate the external air and moisture to prevent the battery In addition, the purpose of antifreezing can be achieved, and the utility model has the advantages of simple structure, high production efficiency and relatively low production cost.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the implementation scope of the present utility model. Therefore, all equivalent changes or modifications based on the features and spirit described in the scope of the claims of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. there is a secondary battery for safeguard function, it is characterized in that, comprising:

One battery pack, its two ends are respectively equipped with a conductive part, and each this conductive part is respectively electrically connected a lead-in wire;

One housing, is provided with an accommodation space in it, with this battery pack accommodating; And

One protective layer, this protective layer fills up this housing and this battery pack coated, and exposes this lead-in wire, and this protective layer is solid-state when normal temperature.

2. having the secondary battery of safeguard function as claimed in claim 1, is liquid protective layer when wherein this protective layer is between 46 DEG C-90 DEG C.

3. have the secondary battery of safeguard function as claimed in claim 1, wherein the material of this protective layer is wax.

4. have the secondary battery of safeguard function as claimed in claim 1, wherein this housing is metal shell.

5. have the secondary battery of safeguard function as claimed in claim 4, wherein this metal shell is aluminum enclosure.

6. there is the secondary battery of safeguard function as claimed in claim 1, wherein this battery pack also comprises multiple secondary cell, the plurality of secondary cell mutually side by side, and each this secondary cell is equipped with two conducting terminals, the plurality of conducting terminal is connected with this conducting terminal of this secondary cell adjacent, with the plurality of secondary cell of connecting, one of them this conducting terminal that wherein first this secondary cell of row and tail arrange this secondary cell is not connected with this conducting terminal of this secondary cell adjacent, using this conductive part as this battery pack.

7. there is the secondary battery of safeguard function as claimed in claim 6, wherein each this secondary cell is also provided with a gas bleeder valve between these two conducting terminals, for the pressure of this secondary cell inside of release.

8. there is the secondary battery of safeguard function as claimed in claim 7, also comprise one first fixed frame and one second fixed frame, this first fixed frame and this second fixed frame are arranged at the plurality of secondary cell two ends respectively, with fixing the plurality of secondary cell, wherein this first fixed frame is located on one end that the plurality of secondary cell is provided with this conducting terminal and this gas bleeder valve, and this first fixed frame is provided with multiple Durchgangshohle to expose this conducting terminal and this gas bleeder valve.

9. have the secondary battery of safeguard function as claimed in claim 6, wherein this secondary cell also comprises multiple conducting strip, and multiple conducting strip is locked on two adjacent these conducting terminals, with the plurality of secondary cell of connecting.

10. have the secondary battery of safeguard function as claimed in claim 9, wherein this conducting strip utilizes a retaining element that this conducting strip is fixed on this conducting terminal.