CN216624400U

CN216624400U - Battery pack and energy storage system

Info

Publication number: CN216624400U
Application number: CN202123322743.5U
Authority: CN
Inventors: 张倍强; 王君生; 王刚; 谈作伟; 陈松杰; 方子健; 高春鹏
Original assignee: Svolt Energy Technology Wuxi Co Ltd
Current assignee: Svolt Energy Technology Wuxi Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-27
Anticipated expiration: 2031-12-27

Abstract

The utility model provides a battery pack and an energy storage system, wherein the battery pack comprises: a box body capable of accommodating the DC/DC module; the battery cell units are arranged in the box body at intervals, ventilation channels are formed between every two adjacent battery cell units and between the battery cell units and the box body, and each battery cell unit comprises a plurality of battery cells which are sequentially arranged; the air inlets are arranged at the rear end of the box body, at least a plurality of air inlets are arranged in one-to-one correspondence with the cell units, and fans are arranged at the air inlets; the wind shielding parts are in one-to-one correspondence with the cell units, are arranged between the cell units and the air inlet and are provided with ventilation parts; a first air outlet and a second air outlet which are arranged at the front end of the box body, and fans are respectively arranged at the first air outlet and the second air outlet. According to the battery pack, the positions of the battery cell units and the air inlet and outlet are reasonably arranged, and the wind shielding parts are arranged, so that the battery pack is beneficial to uniformly cooling each battery cell unit, and the temperature difference of the battery cell units at different positions is effectively reduced.

Description

Battery pack and energy storage system

Technical Field

The utility model relates to the technical field of power batteries, in particular to a battery pack. The utility model also relates to an energy storage system with the battery pack.

Background

The fan arrangement of the heat dissipation structure of the DC/DC (direct current/direct current) energy storage battery module generally adopts a fan arranged in a front panel, a fan arranged in DC/DC, the battery modules are arranged in three rows in parallel, the DC/DC is arranged at the position close to the right of one side of the front panel in the battery module, and a DC/DC air inlet faces to the fan arranged in the front panel. When the energy storage system is in actual operation, the DC/DC blocks the air duct on the right side, so that heat cannot be dissipated for a few times, and the temperature difference between the battery pack close to the DC/DC and the temperature of other battery cells is large. The 3 lines of battery module mode of arranging leads to the wind channel overlength, and the group battery temperature that is close to the fan is low, and the group battery temperature that keeps away from the fan is high, and the difference in temperature in the whole battery package is great, influences the performance of DC/DC energy storage battery module.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a battery pack, which can achieve good heat dissipation of a DC/DC battery module.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a battery pack, comprising: a case provided at a front end thereof with an accommodating part for accommodating a DC/DC module; the battery cell units are at least two and are arranged in the box body at intervals, ventilation channels are formed between every two adjacent battery cell units and between the battery cell units and the box body, and each battery cell unit comprises a plurality of battery cells which are sequentially arranged; the air inlet part comprises a plurality of air inlets arranged at the rear end of the box body, the air inlets are at least arranged in one-to-one correspondence with the battery cell units, and fans are respectively arranged at the air inlets; the wind shielding parts are arranged in one-to-one correspondence with the battery cell units, are arranged between the battery cell units and the air inlet and are provided with ventilating parts; and the air outlet part comprises a first air outlet arranged at the front end of the box body and a second air outlet penetrating through the accommodating part, and the first air outlet and the second air outlet are respectively provided with the fan.

Further, a temperature detection part is arranged in the box body.

Furthermore, the air inlet is arranged corresponding to the middle of the wind shielding part.

Furthermore, the portion of keeping out the wind is including being two keep out wind minute boards that the contained angle arranged, two keep out wind minute board with be formed with first inlet air channel and second inlet air channel between the box respectively.

Further, the ventilation part is the same as the ventilation quantity of the first air inlet channel and the second air inlet channel.

Further, the included angle between the two wind shielding plates is 150-170 degrees.

Further, the ventilation portion includes ventilation holes respectively provided in each of the wind shielding plates.

Furthermore, each wind shielding plate is provided with a plurality of ventilation holes, and the aperture of each ventilation hole is 9-10 mm.

Furthermore, the battery cell units are two in the box body which are arranged at intervals.

Compared with the prior art, the utility model has the following advantages:

(1) according to the battery pack, the positions of the battery cell units and the air inlet and outlet are reasonably arranged, and the wind shielding parts are arranged, so that the battery pack is beneficial to uniformly cooling each battery cell unit, and the temperature difference of the battery cell units at different positions is effectively reduced.

(2) And a temperature detection part is arranged in the box body, and can detect and observe the temperatures of the battery cell units at different positions.

(3) The air inlet is arranged corresponding to the middle of the wind shielding part, and the included angle of the two wind shielding sub-plates is arranged, so that the air quantity can flow out of the end parts of the two wind shielding sub-plates uniformly.

(4) The ventilation volume of the first air inlet channel is the same as that of the second air inlet channel, so that the heat dissipation of the battery cell unit is uniform.

(5) The included angle between the two wind shielding plates is 150-170 degrees, so that the wind direction can be smoothly transited, and the air circulation is smooth.

(6) The wind shielding plate is respectively provided with a plurality of ventilation holes, and the aperture of each ventilation hole is 9-10 mm, so that the wind impact on the wind shielding plate can be reduced.

Another object of the present invention is to provide an energy storage system, which employs the battery pack as described above.

Compared with the prior art, the energy storage system and the battery pack have the same beneficial effects, and are not described again.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a top view of the interior of a battery pack according to an embodiment of the utility model;

fig. 2 is a schematic structural view of a windshield according to an embodiment of the present invention.

Description of reference numerals:

1. a cell unit; 2. an air duct; 3. an air inlet; 4. a fan; 5. a first air outlet; 6. a second air outlet; 7. a wind shielding plate; 8. a first air inlet channel; 9. a second air inlet channel; 10. a vent hole; 11. A DC/DC module; 12. a temperature detection unit; 13. a box body.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element 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 addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a battery pack, which comprises a box body 13, a cell unit 1, an air inlet part, a wind shielding part and an air outlet part, wherein a containing part is arranged at the front end of the box body 13 and used for installing and fixing a DC/DC module 11.

As a specific implementation manner, as shown in fig. 1, two of the battery cell units 1 of this embodiment are specifically arranged at intervals, each battery cell unit includes five battery cells arranged in sequence, ventilation ducts 2 are formed between two adjacent battery cell units 1 and between the battery cell units 1 and the box 13, and the width of the ventilation duct 2 is set reasonably according to the space of the box 13, the size of the battery cell unit 1, and the heat dissipation amount. Through only setting up two electric core units 1, be favorable to improving the radiating effect to each electric core, and the fan 4 that adopts this moment is less in quantity, also can effectively reduce the noise.

It should be noted that, the number of the battery cell units 1 is specifically two, and may also be three, four, and the like according to design requirements, and at this time, the number of the air inlets 3 described below may also be changed along with the number of the battery cell units 1. In addition, the number of cells of each cell unit 1 may also be adjusted according to design requirements.

Still as shown in fig. 1, the air inlet portion includes an air inlet 3 disposed at the rear end of the box 13, the air inlet 3 is disposed in one-to-one correspondence with each of the cell units 1, that is, two air inlets 3 are provided, and the shape and size of each air inlet 3 are the same. Each air inlet 3 is provided with a fan 4, and the fan 4 is arranged on the outer surface of the box body 13 and used for blowing air into the box body 13. Of course, instead of providing two air inlets 3, the number of air inlets 3 and fans may be greater than that of the cell units 1.

The aforementioned wind blocking portions are provided in one-to-one correspondence with the battery cell units 1, that is, two wind blocking portions are provided, each wind blocking portion is located between the corresponding battery cell unit 1 and the corresponding air inlet 3, and a ventilation portion is configured on the wind blocking portion.

In order to improve the use effect, the middle part of the wind shielding part is arranged corresponding to the air inlet. As a possible embodiment, as shown in fig. 2, the wind blocking portion includes two wind blocking plates 7 arranged at an angle, and a first wind inlet channel 8 and a second wind inlet channel 9 are respectively formed between the two wind blocking plates 7 and the box 13. The wind deflector 7 diverts the wind from the wind inlet 3 at the included angle, and the wind enters the ventilation duct 2 from the first wind inlet channel 8, the second wind inlet channel 9 and the ventilation part respectively.

As shown in fig. 2, the vent hole 10 is preferably a circular hole with a diameter of 9mm to 10mm, for example, the diameter of the vent hole 10 may be 9.55mm, but it may be changed according to design requirements. The vent 10 in this embodiment may also have other shapes, such as triangle, quadrangle, etc., as long as the total air volume passing through the vent 10 in the wind shielding portion is equal to the air volume passing through the first air intake duct 8 and the second air intake duct 9. In order to smooth the wind direction and to smooth the air flow, the angle between the two wind deflector plates 7 in each wind deflector portion is between 150 ° and 170 °, for example 158 °.

The air outlet part comprises a first air outlet 5 arranged at the front end of the box body 13 and a second air outlet 6 penetrating through the accommodating part, and fans 4 are respectively arranged at the first air outlet 5 and the second air outlet 6 and used for discharging air of the box body 13 out of the box body 13. Through penetrating second air outlet 6 the portion setting of holding, can dispel the heat to DC/DC module, and guarantee its performance.

In addition, in order to obtain better using effect, the fan 4 specifically adopts a speed-regulating fan, and in addition, a temperature detection part 12 is further arranged in the box body 13, wherein the temperature detection part 12 only needs to adopt a temperature sensor. In this embodiment, in order to improve the uniformity of heat dissipation for each cell unit 1, as shown in fig. 1, the temperature detection units 12 are provided at intervals. During specific implementation, a BMU (BMS) can be controlled at one stage to set the rotating speed of the heat dissipation fan corresponding to a plurality of temperature points. For example: when the cell temperature is 30 ℃, the fan rotating speed is A, when the cell temperature is 35 ℃, the fan rotating speed is B, and when the cell temperature is 40 ℃, the fan rotating speed is C.

The battery pack of this embodiment, through the position of rationally arranging electric core unit and business turn over wind gap to and set up the portion of keeping out the wind, be favorable to evenly cooling to each electric core unit, can effectively reduce the difference in temperature of different position electric core units.

In addition, this embodiment still relates to an energy storage system, and energy storage system adopts the battery package that above-mentioned introduced.

The energy storage system of this embodiment through adopting foretell battery package, can make the even each wind channel of process of cold wind, reduces the difference in temperature between the electric core to can make the biggest difference in temperature between the electric core in 2 ℃, provide the temperature guarantee for the long-life of energy storage system operation.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A battery pack, comprising:

a case (13) provided with a housing section for housing the DC/DC module (11) at the front end of the case (13);

the battery cell units (1) are at least two arranged in the box body (13) at intervals, ventilation channels (2) are formed between every two adjacent battery cell units (1) and between the battery cell units (1) and the box body (13), and each battery cell unit (1) comprises a plurality of battery cells which are sequentially arranged;

the air inlet part comprises air inlets (3) arranged at the rear end of the box body (13), the air inlets (3) are at least a plurality of air inlets which are arranged corresponding to the battery cell units (1) one by one, and fans (4) are respectively arranged at the air inlets (3);

the wind shielding parts are arranged in one-to-one correspondence with the battery cell units (1), are arranged between the battery cell units (1) and the air inlets (3), and are provided with ventilating parts;

air-out portion, including locating first air outlet (5) of box (13) front end, and run through second air outlet (6) that the holding portion set up, and in first air outlet (5) with second air outlet (6) punishment do not is equipped with fan (4).

2. The battery pack according to claim 1, wherein:

a temperature detection part (12) is arranged in the box body (13).

3. The battery pack according to claim 1, wherein:

the air inlet (3) is arranged corresponding to the middle of the wind shielding part.

4. The battery pack according to claim 1, wherein:

the wind-break portion is including being two wind fenders (7) that the contained angle arranged, two wind fenders (7) with be formed with first inlet air channel (8) and second inlet air channel (9) respectively between box (13).

5. The battery pack according to claim 4, wherein:

the ventilation part is the same as the ventilation quantity of the first air inlet channel (8) and the second air inlet channel (9).

6. The battery pack according to claim 4, wherein:

the included angle between the two wind shielding plates (7) is 150-170 degrees.

7. The battery pack according to claim 4, wherein:

the ventilation part comprises ventilation holes (10) which are respectively arranged on the wind shielding plates (7).

8. The battery pack according to claim 7, wherein:

a plurality of ventilation holes (10) are respectively arranged on each wind shielding plate (7), and the aperture of each ventilation hole (10) is 9-10 mm.

9. The battery pack according to claim 1, wherein:

the battery cell units (1) are two of the box bodies (13) arranged at intervals.

10. An energy storage system, characterized by: the energy storage system adopts the battery pack of any one of claims 1 to 9.