CN215418330U

CN215418330U - Battery cell temperature protection device

Info

Publication number: CN215418330U
Application number: CN202120800186.4U
Authority: CN
Inventors: 冯悦蔓
Original assignee: Jiangsu Chuanlian New Energy Technology Co ltd
Current assignee: Jiangsu Chuanlian New Energy Technology Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2022-01-04
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a battery core temperature protection device which comprises a plurality of mutually connected sensing units and a battery manager connected with the sensing units, wherein the battery manager is simultaneously connected with the plurality of battery cores, the sensing units are correspondingly arranged on the corresponding battery cores, when the battery manager works normally, the sensing units are closed, when the temperature of the battery cores rises to a set temperature value, the sensing units are disconnected, and the battery manager monitors the disconnection of the sensing units to cut off a battery core loop. The battery core temperature protection device provided by the utility model has the advantages that by adopting the method of adding the sensing unit on each battery core, the battery manager BMS can monitor the temperature of each battery core, and can timely disconnect the current and protect all the battery cores when thermal runaway occurs.

Description

Battery cell temperature protection device

Technical Field

The utility model belongs to the field of temperature protection, and particularly relates to a battery core temperature protection device.

Background

When the lithium cell was too much in quantity, the temperature of every electric core was not detected to battery manager BMS, when having electric core emergence thermal runaway in the module, after a period of time, the temperature monitoring point of battery manager BMS just can be passed to the heat, and battery manager BMS just detects the temperature anomaly, and the break-off current is late when nevertheless.

Therefore, in view of the above technical problems, it is necessary to provide a cell temperature protection device.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a cell temperature protection device, so as to achieve rapid current interruption when thermal runaway occurs.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

the utility model provides an electricity core temperature protection device, protection device includes a plurality of interconnect's induction element and the battery manager who is connected with induction element, and battery manager is connected with a plurality of electric cores simultaneously, and induction element corresponds installs on the electric core that corresponds, and during normal work, induction element is closed, and when the temperature of electric core rose to setting for the temperature value, induction element disconnection, the battery manager monitored the induction element disconnection and cut off electric core return circuit.

In one embodiment, the sensing units are connected in series, and each sensing unit comprises a temperature switch.

In one embodiment, the sensing units are connected in parallel, and each sensing unit comprises a temperature switch.

In one embodiment, the sensing unit further comprises a first indicator light connected in series with the temperature switch.

In one embodiment, the sensing unit further includes a dc contactor, a coil of the dc contactor is connected in series with the temperature switch, and a normally closed switch of the dc contactor is connected in series with the buzzer and connected in parallel with a branch formed by connecting the coil and the temperature switch in series.

In one embodiment, a second indicator light is connected between the coil and the temperature switch.

In one embodiment, the cells are arranged in two rows.

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

the battery core temperature protection device provided by the utility model has the advantages that by adopting the method of adding the sensing unit on each battery core, the battery manager BMS can monitor the temperature of each battery core, and can timely disconnect the current and protect all the battery cores when thermal runaway occurs.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be 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 described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a cell temperature protection device according to a first embodiment of the present invention;

FIG. 2 is a schematic circuit diagram of an induction unit according to a second embodiment of the present invention;

fig. 3 is a schematic circuit diagram of an induction unit in the third embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.

The utility model discloses a battery core temperature protection device which comprises a plurality of mutually connected sensing units and a battery manager connected with the sensing units, wherein the battery manager is simultaneously connected with a plurality of battery cores, the sensing units are correspondingly arranged on the corresponding battery cores, when the battery manager works normally, the sensing units are closed, when the temperature of the battery cores rises to a set temperature value, the sensing units are disconnected, and the battery manager monitors the disconnection of the sensing units to cut off a battery core loop.

The present invention is further illustrated by the following specific examples.

The first embodiment is as follows:

referring to fig. 1, a battery core temperature protection device, including a plurality of interconnect's induction unit and the battery manager BMS that is connected with the induction unit, battery manager BMS is connected with a plurality of electric cores 2 simultaneously, all electric cores 2 set up in the box and electric core 2 divide into two rows of settings, every induction unit correspondence is installed on corresponding electric core 2, in normal work, the induction unit is closed, when the temperature of electric core 2 rose to the settlement temperature value, the induction unit disconnection, the battery manager BMS monitors the induction unit disconnection and cuts off electric core 2 return circuit.

Specifically, the sensing units are connected with the battery manager BMS after being connected in series, each sensing unit comprises a temperature switch 1, and a loop formed by the temperature switches 1 in series is monitored through the battery manager BMS.

During normal work, temperature switch 1's contact is in the closure state, and when the temperature rose to the settlement temperature value, bimetallic element in the temperature switch 1 was heated and produced the internal stress and move rapidly, opens the contact, cuts off 1 series circuit of temperature switch, and the BMS monitors 1 series circuit of temperature switch and interrupts, cuts off electric core 2's electric current, protects each electric core 2.

Example two:

referring to fig. 2, in the present embodiment, the sensing units are connected in parallel to each other and then connected to the battery manager BMS, and each of the sensing units includes a temperature switch 1 and a first indicator lamp 3 connected in series to the temperature switch 1.

During normal work, temperature switch 1's contact is in the closure state, first pilot lamp 3 is bright, when the temperature risees to the settlement temperature value, bimetallic element in the temperature switch 1 is heated and produces the internal stress and acts rapidly, open the contact, cut off the branch road at the 1 place of corresponding temperature switch, first pilot lamp 3 goes out, corresponding temperature switch 1 interrupt is monitored to the BMS, cut off the electric current of electric core, each electric core of protection, it is too high to observe specific which electric core temperature through first pilot lamp 3 simultaneously, and convenient the maintenance.

Example three:

referring to fig. 3, in the present embodiment, the sensing units are connected in parallel to each other and then connected to the battery manager BMS, the sensing units include a temperature switch 1, a dc contactor having a coil 41 connected in series with the temperature switch 1, a normally closed switch 42 connected in series with a buzzer 6 and connected in parallel to a branch formed by the coil 41 and the temperature switch 1 in series, and a second indicator lamp 5 connected between the coil 41 and the temperature switch 1.

During normal work, temperature switch 1's contact is in the closure state, second indicator lamp 5 is bright, coil 41 gets electricity, normally closed switch 42 disconnection, when the temperature risees to the settlement temperature value, bimetallic element in the temperature switch 1 is heated and produces the internal stress and acts rapidly, open the contact, cut off the branch road at the temperature switch 1 place that corresponds, second indicator lamp 5 goes out, coil 41 loses electricity, normally closed switch 42 is closed, bee calling organ 6 reports to the police, corresponding temperature switch 1 interrupt is monitored to the BMS simultaneously, cut off the electric current of electric core, protect each electric core, it is specific electric core high temperature to observe through chimes of doom and second indicator lamp 5 simultaneously, and convenient maintenance.

According to the technical scheme, the utility model has the following beneficial effects:

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an electricity core temperature protection device, its characterized in that, protection device includes a plurality of interconnect's induction element and the battery manager who is connected with induction element, and battery manager is connected with a plurality of electric cores simultaneously, and induction element corresponds installs on the electric core that corresponds, and during normal work, induction element is closed, and when the temperature of electric core rose to setting for the temperature value, induction element disconnection, and the battery manager monitors the induction element disconnection and cuts off electric core return circuit.

2. The cell temperature protection device of claim 1, wherein the sensing units are connected in series with each other, and each sensing unit comprises a temperature switch.

3. The cell temperature protection device of claim 1, wherein the sensing units are connected in parallel with each other, and the sensing units comprise temperature switches.

4. The cell temperature protection device of claim 3, wherein the sensing unit further comprises a first indicator light in series with the temperature switch.

5. The cell temperature protection device according to claim 3, wherein the sensing unit further comprises a direct current contactor, a coil of the direct current contactor is connected in series with the temperature switch, and a normally closed switch of the direct current contactor is connected in series with the buzzer and connected in parallel with a branch formed by connecting the coil and the temperature switch in series.

6. The cell temperature protection device of claim 5, wherein a second indicator light is connected between the coil and the temperature switch.

7. The cell temperature protection device of claim 1, wherein the cells are arranged in two rows.