CN217904048U

CN217904048U - Charge-discharge device based on BMS

Info

Publication number: CN217904048U
Application number: CN202221506980.9U
Authority: CN
Inventors: 任思燕; 吕柏全; 张灵; 肖奔
Original assignee: Hua'an Xinchuang Jiangsu New Energy Technology Co ltd
Current assignee: Hua'an Xinchuang Jiangsu New Energy Technology Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-25
Anticipated expiration: 2032-06-15

Abstract

The utility model provides a charge-discharge device based on BMS belongs to battery technical field. It has solved the problem of battery cooling among the prior art. The charging and discharging device based on the BMS comprises at least four battery modules, wherein the battery modules are arranged in a matrix, each battery module is correspondingly provided with a radiating pipe, two ports of each radiating pipe are respectively a first port and a second port, a row pipeline is arranged corresponding to each row of battery modules, and the first ports of the radiating pipes of each row of battery modules are simultaneously communicated with the corresponding row pipelines of the battery modules; and the second ports of the radiating pipes of each row of battery modules are simultaneously communicated with the corresponding row pipelines of the battery modules. The utility model discloses the combination that utilizes line pipeline and row pipeline realizes the control to the break-make of specific position cooling tube coolant liquid, has realized carrying out the difference nature cooling to the inside different regions of charging and discharging device.

Description

Charge-discharge device based on BMS

Technical Field

The utility model belongs to the technical field of the battery, especially a charging and discharging device based on BMS.

Background

Charging and discharging device, be secondary battery usually, for example, lithium cell, in order to obtain great continuation of the journey, these batteries generally need a large amount of battery module (for example electric core) integrated battery module, then integrated as the battery package by the module again, and in order to obtain great output, the electric current of electric core is great, these integrated electric core during operation generate heat obviously, mainly adopt the whole uniformity cooling strategy to the battery package at present, receive the production technology influence or the difference of the regional that discharges for different electric cores or generating heat of module are different, whole uniformity cooling strategy can not carry out the difference cooling that has true pertinence to specific module or electric core. Although a Battery Management System (BMS) can realize control of measurement and discharge of the temperature of each Battery module or each Battery cell at present, differential cooling control of different regions of a Battery cannot be realized.

Therefore, how to implement differential cooling of different areas inside the charging and discharging device becomes a technical problem to be solved urgently in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a charging and discharging device based on BMS, this charging and discharging device based on BMS can carry out the difference nature cooling to the inside different regions of charging and discharging device to practice thrift the cooling power consumption, reach the effect of accurate cooling.

The purpose of the utility model can be realized by the following technical proposal: a charging and discharging device based on a BMS comprises battery modules and a BMS management system, wherein the BMS management system is used for acquiring the temperature of the battery modules, the number of the modules is at least four, the battery modules are arranged in a matrix, each battery module is correspondingly provided with a radiating pipe, two ports of each radiating pipe are respectively a first port and a second port, a row pipeline is arranged on the battery module corresponding to each row, and the first ports of the radiating pipes of each row of battery modules are simultaneously communicated with the corresponding row pipeline of the battery module; the battery module corresponding to each row is provided with a row pipeline, a second port of a radiating pipe of each row of battery modules is communicated with the corresponding row pipeline simultaneously, one end of the row pipeline is provided with an on-off control valve, the other end of the row pipeline is sealed, and the row pipeline are communicated with a cooling liquid circulating device.

In some embodiments, the row pipes and the column pipes are respectively located at the upper and lower sides of the module.

In some embodiments, the matrix of the battery module arrangement has an equal number of rows and columns.

In some embodiments, a thermal element is disposed on each of the modules.

In some embodiments, both ends of the row pipeline are provided with on-off control valves, and both ends of the column pipeline are provided with on-off control valves.

In some embodiments, the row lines are connected to the same common row header by on-off control valves, and the column lines are connected to the same common column header by on-off control valves.

In some embodiments, the battery cells of the battery module are cylindrical battery cells, the row pipes and the column pipes are located at two ends of the cylindrical battery cells, and the heat dissipation pipe is located between the cylindrical battery cells.

In certain embodiments, there are four cylindrical cells within each module.

Compared with the prior art, this charge-discharge device based on BMS has following advantage:

the utility model discloses utilize the line pipeline to realize the control to the break-make of specific position cooling tube coolant liquid with the combination of row's pipeline, realized carrying out the difference nature cooling to the inside different regions of charge-discharge device to practice thrift the cooling power consumption, reach the effect of accurate cooling.

Drawings

In the drawings, which are not necessarily to scale, like reference numerals may depict like parts in different views for the purpose of illustrating details and facilitating understanding of the principles thereof. The drawings illustrate generally, by way of example, but not by way of limitation, embodiments discussed herein.

FIG. 1 is a schematic diagram of the first embodiment.

Fig. 2 is a schematic AA cross-sectional view of fig. 1.

FIG. 3 is a schematic diagram of the second embodiment.

In the figure, 1, a battery module; 2. a cylindrical cell; 3. a radiating pipe; 301. a first port; 302. a second port; 4. a pipeline; 5. a row pipeline; 6. an on-off control valve; 41. a common row header pipe; 51. a common column header; 7. and a cooling liquid circulating device.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model according to the claims. Moreover, all combinations of features described in the embodiments are not necessarily essential to the solution of the invention.

It will be understood by those of ordinary skill in the art that all directional references (e.g., above, below, upward, above, downward, below, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the figures to aid the reader's understanding, and do not imply (e.g., a limitation on position, orientation, or use, etc.) a limitation on the scope of the invention, which is defined by the claims appended hereto. Additionally, some ambiguous terms (e.g., substantially, definite, substantially, etc.) may refer to slight imprecision or deviation in terms of conditions, amounts, values, or dimensions, etc., some of which are within manufacturing or tolerance limits.

Example one

As shown in fig. 1 and 2, a BMS-based charging and discharging device includes a battery module 1 and a BMS management system, the number of batteries in the battery module 1 is four cylindrical cells 2, the number of the modules is at least four, the figure of the embodiment shows nine, the battery modules 1 are arranged in a matrix, and the number of rows and columns of the matrix of the battery modules 1 is equal.

Every battery module 1 all corresponds and is provided with cooling tube 3, two ports of cooling tube 3 are first port 301 and second port 302 respectively, and one is the liquid outlet for liquid inlet hole one.

The row pipeline 4 is arranged corresponding to each row of the battery modules 1, and the first ports 301 of the radiating pipes 3 of each row of the battery modules 1 are simultaneously communicated with the corresponding row pipeline 4 of the row of the battery modules 1; the row of pipes 5 is arranged corresponding to each row of battery modules 1, and the second ports 302 of the heat dissipation pipes 3 of each row of battery modules 1 are simultaneously communicated with the corresponding row of pipes 5 of the row of battery modules 1.

The row pipelines 4 and the column pipelines 5 are respectively located at the upper and lower sides of the module, namely, the row pipelines 4 and the column pipelines 5 are located at two ends of the cylindrical battery cells 2, and the radiating pipes 3 are located between the four cylindrical battery cells 2.

The cooling device comprises a row pipeline 4, a column pipeline 5 and a cooling liquid circulating device 7, wherein one end of the row pipeline 4 is provided with an on-off control valve 6, the other end of the row pipeline is closed, one end of the column pipeline 5 is provided with an on-off control valve 6, the other end of the column pipeline is closed, the row pipeline 4 is communicated with a common row liquid collecting pipe 41 through the on-off control valve 6, the column pipeline 5 is communicated with a common column liquid collecting pipe 51 through the on-off control valve 6, the cooling liquid circulating device 7 is communicated between the common row liquid collecting pipe 41 and the common column liquid collecting pipe 51, the cooling liquid circulating device 7 is a pump, and when the row pipeline 4 communicated with the cooling pipe 3 and the on-off control valve 6 of the column pipeline 5 are opened simultaneously, the cooling liquid circulating device 7 can enable the cooling liquid to flow through the cooling pipe 3, so that heat of batteries around the cooling pipe 3 can be dissipated.

A thermistor may be provided in each of the battery modules 1 for the BMS managing system to obtain the temperature of the battery module 1, and when the BMS managing system detects that the temperature of a certain battery module 1 is high, the heat radiating pipe 3 of the area is turned on by controlling the on-off control valve 6, i.e., the refrigerant flows through the heat radiating pipe 3 of the area, thereby cooling the area.

Example two

As shown in fig. 3, on-off control valves 6 may be disposed at both ends of the row pipeline 4, and on-off control valves 6 may be disposed at both ends of the column pipeline 5, so as to achieve more flexible control of the cooling liquid.

Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention. The order of execution of operations, steps, and the like in the apparatuses and methods shown in the specification and drawings may be implemented in any order as long as the output of the preceding process is not used in the subsequent process, unless otherwise specified. The use of terms of similar order (e.g., "first," "then," "second," "again," "then," etc.) for convenience of description does not imply that these must be performed in this order.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A charging and discharging device based on a BMS comprises battery modules and a BMS management system, wherein the BMS management system is used for acquiring the temperature of the battery modules, the BMS management system is characterized in that the number of the battery modules is at least four, the battery modules are arranged in a matrix, each battery module is correspondingly provided with a radiating pipe, two ports of each radiating pipe are respectively a first port and a second port, a row pipeline is arranged corresponding to each row of battery modules, and the first port of the radiating pipe of each row of battery modules is simultaneously communicated with the corresponding row pipeline of the battery modules; the battery module corresponding to each row is provided with a row pipeline, a second port of a radiating pipe of each row of battery modules is communicated with the corresponding row pipeline simultaneously, one end of the row pipeline is provided with an on-off control valve, the other end of the row pipeline is sealed, and the row pipeline are communicated with a cooling liquid circulating device.

2. The BMS-based charging and discharging device according to claim 1, wherein the row pipe and the column pipe are respectively located at upper and lower sides of the module.

3. The BMS-based charge and discharge device according to claim 1, wherein the number of rows and columns of the matrix in which the battery modules are arranged is equal.

4. The BMS-based charge and discharge device according to claim 1, wherein one heat sensing element is provided on each of the battery modules.

5. The BMS-based charging and discharging device according to claim 1, wherein both ends of the row pipe are provided with on-off control valves, and both ends of the column pipe are provided with on-off control valves.

6. The BMS-based charging and discharging device according to claim 5, wherein the row pipes are communicated with the same common row header through on-off control valves, and the column pipes are communicated with the same common column header through on-off control valves.

7. The BMS-based charge and discharge device according to claim 1, wherein the cells of the battery module are cylindrical cells, the row and column pipes are located at both ends of the cylindrical cells, and the heat dissipation pipe is located between the cylindrical cells.

8. The BMS-based charge and discharge device according to claim 7, wherein there are four cylindrical cells in each module.