CN211455906U

CN211455906U - Integrated power battery

Info

Publication number: CN211455906U
Application number: CN202020225212.0U
Authority: CN
Inventors: 吴翔; 闻俊涛; 鄂新刚
Original assignee: SHENZHEN SHARING ELECTRONICS CO Ltd
Current assignee: SHENZHEN SHARING ELECTRONICS CO Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-09-08
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses an integrated power battery belongs to battery technical field. The utility model discloses an integrated power battery includes: a battery case; the power battery is fixedly arranged on the battery box body; the PTC heater is arranged between the battery box body and the power battery, and the surface of the PTC heater is connected with the surface of the power battery, so that the PTC heater and the power battery exchange heat. The utility model discloses an integrated power battery, PTC heater and power battery are integrated together, and the PTC heater can directly carry out the heat exchange with power battery, compares in external heating device, has left out the pipeline of the required circulation heat transfer liquid of heating, and holistic heating efficiency is higher, rate of heating is faster, the cost is lower.

Description

Integrated power battery

Technical Field

The utility model relates to a battery technology field, concretely relates to integrated power battery.

Background

The power battery is a power source for providing power source for the tool, and is a storage battery for providing power for electric automobiles, electric bicycles, golf carts and the like.

The operation of the power battery is influenced by temperature, when the power battery is in a low-temperature environment (generally below 0 ℃), the charging and discharging of a power battery pack are limited, and the service life and the reliability of the power battery are influenced when the power battery is used at low temperature; when the power cell is used at low temperature, the power cell must be brought to a suitable temperature (typically above 5 ℃) by heating the power cell.

The existing heating device of the power battery is external, for example, an external heat pump system is used for heating the power battery, a pipeline for heat exchange liquid is arranged between the external heating device and the power battery, the overall heat exchange efficiency is low, the heating speed is slow, and the system cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of prior art or solve prior art partially, the embodiment of the utility model provides an integrated power battery, with PTC heater and power battery integration together to improve the heating efficiency to power battery, reduce integrated power battery's cost.

The utility model provides an integrated power battery, include:

a battery case;

the power battery is fixedly arranged on the battery box body;

the PTC heater is arranged between the battery box body and the power battery, and the surface of the PTC heater is connected with the surface of the power battery, so that the PTC heater and the power battery exchange heat.

Optionally, the battery box further comprises a refrigeration component, and the refrigeration component is arranged between the power battery and the battery box body;

the surface of the refrigeration component is connected with the surface of the power battery so as to enable the refrigeration component to exchange heat with the power battery,

or the like, or, alternatively,

the surface of the refrigeration component is connected with the surface of the PTC heater, so that the refrigeration component and the power battery are in heat exchange through the PTC heater.

Alternatively, if the surface of the refrigeration component is connected to the surface of the PTC heater:

the power battery, the PTC heater and the refrigeration component are sequentially stacked up and down.

Optionally, a flexible heat conducting pad is further arranged between the PTC heater and the power battery and between the PTC heater and the refrigeration component.

Optionally, the refrigeration part is a mouth cavity, and the mouth cavity is used for circulating cooling liquid for refrigeration when refrigerating the power battery.

Optionally, a support pad is further disposed between the refrigeration component and the battery box.

Optionally, if the surface of the refrigeration component is connected to the surface of the power battery, then:

the battery box is characterized in that a first groove and a second groove are formed in the surface of the battery box, the PTC heater is embedded in the first groove, the refrigerating part is embedded in the second groove, the top surface of the PTC heater, the top surface of the refrigerating part and the battery box are flush with the surface of the second groove, and are connected with the surface of the power battery.

Optionally, the power battery is connected with the battery box body, the refrigeration component and the PTC heater through adhesive glue with thermal conductivity.

Optionally, the refrigeration part includes pipe or flat pipe, pipe or flat pipe are used for when right power battery refrigeration circulation is used for cryogenic coolant.

Optionally, the battery box is an aluminum profile.

The utility model has the advantages that:

the utility model discloses an integrated power battery, including battery box, power battery and PTC heater, the PTC heater is used for heating power battery when power battery needs to heat, and the PTC heater is located between battery box and the power battery, and the surface of PTC heater links to each other with power battery's surface to make PTC heater and power battery heat exchange, the utility model discloses an integrated power battery, PTC heater and power battery are integrated together, and the PTC heater can directly carry out the heat exchange with power battery, compares in external heating device, has left out the pipeline of the required circulation heat transfer liquid of heating, and holistic heating efficiency is higher, rate of heating is faster, the cost is lower.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an integrated power battery according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure at A in FIG. 1;

fig. 3 is a schematic structural diagram of an integrated power battery according to an embodiment of the present invention.

Wherein the correspondence between the reference numbers and the names of the components in fig. 1 to 3 is:

1. a battery case; 10. a first groove; 11. a second groove; 2. a power battery; 3. a PTC heater; 4. a refrigeration component; 5. a thermally conductive pad; 6. a support pad; 7. and (5) bonding glue.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

As fig. 1 shows the structure diagram of the integrated power battery of an embodiment of the present invention, as fig. 2, shows the enlarged structure diagram of a part in fig. 1, as fig. 3, shows the structure diagram of the integrated power battery of another embodiment of the present invention, referring to fig. 1 to fig. 3, an embodiment of the present invention provides an integrated power battery, including:

a battery case 1;

the power battery 2 is fixedly arranged on the battery box body 1;

and the PTC heater 3 is arranged between the battery box body 1 and the power battery 2, and the surface of the PTC heater 3 is connected with the surface of the power battery 2 so that the PTC heater 3 and the power battery 2 exchange heat.

The embodiment of the utility model provides an in, when needs heat power battery 2, through electrifying PTC heater 3, make PTC heater 3 and power battery 2 heat exchange, and then utilize the heat that PTC heater 3 produced to heat power battery 2, in this embodiment, PTC heater 3 adopts built-in structure, it is direct to link to each other with power battery 2, compare in traditional power battery 2's external heating device, PTC heater 3 in this embodiment is in the same place with power battery 2 is integrated, heating efficiency is higher, the speed of heating is faster, and need not to be equipped with the pipeline of complicated heat transfer between PTC heater 3 and the power battery 2, holistic cost is lower.

The operation of the power battery is influenced by high temperature besides low temperature, and when the temperature reaches above 50 ℃, the power battery becomes unstable, so that great potential safety hazard exists. Therefore, the utility model discloses integrated power battery still includes refrigeration part 4 for when the temperature of power battery 2 self or ambient temperature are too high, cool down power battery 2.

The refrigerating component 4 is arranged between the power battery 2 and the battery box 1, and in an alternative embodiment, as shown in fig. 1 and 2, the surface of the refrigerating component 4 is connected with the surface of the PTC heater 3, so that the refrigerating component 4 and the power battery 2 are in heat exchange through the PTC heater 3, or, as shown in fig. 3, the surface of the refrigerating component 4 is connected with the surface of the power battery 2, so that the refrigerating component 4 and the power battery 2 are in heat exchange. As will be appreciated by those skilled in the art, the PTC heater generally comprises a metal casing and a PTC heating core mounted in the metal casing, the PTC heating core is located inside the metal casing, and the outside of the PTC heater is the metal casing, so in this embodiment, the refrigeration component 4 and the power battery 2 exchange heat through the PTC heater 3, that is, heat is conducted through the metal casing of the PTC heater 3, and the metal casing is generally an aluminum casing or a stainless steel casing, which has good heat conduction performance and can ensure the efficiency and speed of heat conduction.

When the surface of the refrigeration component 4 is connected with the surface of the PTC heater 3 so that the refrigeration component 4 and the power battery 2 exchange heat through the PTC heater 3, referring to fig. 1 and 2, in an alternative embodiment, the power battery 2, the PTC heater 3 and the refrigeration component 4 are sequentially stacked up and down, i.e., the bottom surface of the power battery 2 is connected with the top surface of the PTC heater 3, and the bottom surface of the PTC heater 3 is connected with the bottom surface of the refrigeration component 4.

The embodiment of the utility model provides an in, PTC heater 3, refrigeration part 4 is not simultaneous working, but according to ambient temperature or battery self temperature and the autonomous working, when ambient temperature or battery self temperature cross low, PTC heater 3 works, heat power battery 2, at this moment, refrigeration part 4 is in unoperated state, when ambient temperature or battery self temperature are too high, PTC heater 3 is in unoperated state, refrigeration part 4 works, to power battery 2 refrigeration, it needs to be noted that, PTC heater 3 self belongs to good heat-conducting part, therefore, at refrigeration part 4 during operation, PTC heater 3 has still played the middle heat transfer part that carries out the heat exchange between refrigeration part 4 and power battery 2.

Optionally, the refrigerating part 4 includes a mouth cavity, and the mouth cavity is used for circulating a cooling liquid for refrigeration when refrigerating the power battery 2 so as to take away heat of the power battery 2, thereby achieving the purpose of cooling the power battery 2. As shown in fig. 1, the mouth cavity is a pipeline structure formed by enclosing a thin-walled metal material, and it can be known that the thin-walled metal material in this embodiment has good heat conductivity, such as aluminum material, and of course, those skilled in the art can simply replace or change the material and shape of the refrigeration component according to commonly used technical means, which should be within the scope of the present invention.

The heat conducting pad 5 with flexibility is further arranged between the PTC heater 3 and the power battery 2 and between the PTC heater 3 and the refrigeration component 4, the heat conducting pad 5 has flexibility to buffer impact and vibration between the power battery 2 and the component below the power battery, so as to protect the PTC heater 3 and the refrigeration component 4, especially protect the refrigeration component 4, the refrigeration component 4 is a thin-walled metal material, and under the action of vibration or impact, the thin-walled deformation or even deformation of the refrigeration component 4 is easily caused, and the heat conducting pad 5 also has a heat conducting capability, which is preferably a good conductor, such as heat conducting gel.

Still be provided with supporting pad 6 between refrigeration part 4 and the battery box 1, supporting pad 6 also can select to be flexible material to further increase the performance of anti-impact and vibrations, reach the effect of protection refrigeration part 4.

The refrigeration component 4 is arranged between the power battery 2 and the battery box 1, and in another alternative embodiment, as shown in fig. 3, the surface of the refrigeration component 4 is connected with the surface of the power battery 2, so that the refrigeration component 4 exchanges heat with the power battery 2.

In this embodiment, the refrigeration component 4 and the PTC heater 3 respectively perform surface heat exchange with the power battery 2, that is, when the power battery 2 is heated, the PTC heater 3 operates to conduct heat to the power battery 2, and the refrigeration component 4 is in a non-operating state; when the power battery 2 is cooled, the refrigeration component 4 works to cool the power battery 2, and at the moment, the heat exchange between the refrigeration component 4 and the power battery 2 does not need to be carried out by the PTC heater 3 as an intermediate medium.

First recess 10 and second recess 11 have been seted up on the surface of battery box 1, and PTC heater 3 inlays and locates in first recess 10, and refrigeration part 4 inlays and locates in second recess 11, and the top surface of PTC heater 3, the top surface of refrigeration part 4 and the surface of battery box 1 flush to link to each other with power battery 2's surface. In this embodiment, the PTC heater 3, the refrigeration component 4, and the battery case 1 are all connected to the same surface of the power battery 2 to achieve heat exchange. It should be noted that, as shown in fig. 2, in the present embodiment, since the PTC heater 3, the refrigeration component 4 and the battery case 1 are all connected to the same surface of the power battery 2, and thus, as far as the PTC heater 3 or the refrigeration component 4 is concerned, the surface of the PTC heater 3 or the refrigeration component 4 connected to the power battery 2 is relatively small in area, so that the efficiency of heat exchange between the PTC heater 3 or the refrigeration component 4 and the power battery 2 is relatively low, and at this time, a part of heat is exchanged through the battery case 1, and the area of the connection between the battery case 1 and the power battery 2 is relatively large, so that when the PTC heater 3 is operated, a part of heat is conducted to the power battery 2, another part of heat is conducted to the battery case 1, and then the battery case 1 conducts heat to the power battery 2, and similarly, when the refrigeration component 4 is operated, a part of heat is absorbed by the power battery 2, and absorbs a part of the heat from the battery case 1, and the battery case 1 absorbs the heat from the power battery 2 after the temperature thereof drops.

Optionally, a plurality of second grooves 11 are formed in the battery box 1 to embed a plurality of refrigeration parts 4, so that the refrigeration efficiency of the power battery 2 is increased.

In one embodiment, the power battery 2 is connected with the battery box 1, the refrigeration component 4 and the PTC heater 3 through the adhesive glue 7 with thermal conductivity, the adhesive glue 7 plays roles of adhesive fastening, impact resistance and shock absorption to protect the PTC heater 3 and the refrigeration component 4, and meanwhile, the adhesive glue 7 also serves as an intermediate heat conduction device to ensure heat exchange.

In one embodiment, the cooling component 4 includes a round pipe or a flat pipe, and the round pipe or the flat pipe is used for circulating cooling liquid for cooling when cooling the power battery 2 so as to absorb and take away heat of other components connected with the cooling component 4.

Optionally, the battery case 1 is an aluminum profile to ensure good thermal conductivity. It should be noted that, in other embodiments, the battery case 1 may be made of other heat conductive materials, and those skilled in the art can easily change the material of the battery case 1, which should be within the scope of the present invention.

The utility model discloses an integrated power battery compares in traditional power battery, can heat and cool down at power battery respectively, utilizes the PTC heater to heat power battery, the cooling part is to the power battery cooling, and PTC heater, cooling part, power battery and battery box integration are integrated as a whole, have saved the pipeline of intermediate user heat transfer, and the efficient, fast of whole heating and cooling is with low costs. In an alternative embodiment, the PTC heater has an intermediate heat transfer medium between the refrigeration component and the power battery in addition to the function of heating the power battery, thereby further improving the overall integration level.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated power cell, comprising:

a battery case;

the power battery is fixedly arranged on the battery box body;

2. The integrated power battery of claim 1, further comprising a refrigeration component disposed between the power battery and the battery case;

or the like, or, alternatively,

3. The integrated power cell of claim 2, wherein if the surface of the refrigeration component is connected to the surface of the PTC heater:

4. The integrated power cell of claim 3, wherein a flexible thermal pad is further disposed between the PTC heater and the power cell and between the PTC heater and the refrigeration component.

5. The integrated power cell of claim 3, wherein the cooling component is a die cavity for circulating a cooling fluid for cooling when cooling the power cell.

6. The integrated power battery of claim 3, wherein a support pad is further disposed between the cooling member and the battery case.

7. The integrated power cell of claim 2, wherein if the surface of the cooling component is coupled to the surface of the power cell:

8. The integrated power cell of claim 7, wherein the power cell is connected to the battery case, the refrigeration component, and the PTC heater by a thermally conductive adhesive.

9. The integrated power cell of claim 7, wherein the cooling component comprises a round tube or a flat tube for circulating a cooling fluid for cooling when cooling the power cell.

10. The integrated power cell of claim 7, wherein the cell casing is an aluminum profile.