CN210071173U - A temperature collection board for battery module - Google Patents

Abstract

The present application discloses a temperature collection board for a battery module, comprising a board body, and the board body is provided with: a temperature collection chip, a plug-in connector, and a temperature collection circuit connecting the plug-in connector and the temperature collection chip; The plate body is also provided with: a first voltage dividing resistor and a second voltage dividing resistor with a different resistance value from the first voltage dividing resistor, for selectively connecting the first voltage dividing resistor or the second voltage dividing resistor The voltage dividing resistor is connected to the selection switch of the temperature acquisition circuit. The temperature collection board of the present application is simple in structure and convenient to use, and can be matched with temperature probes of various specifications, so as to accurately detect the temperature values of various battery modules.

Description

A temperature collection board for battery module

technical field

The present application relates to the field of signal acquisition of battery modules, in particular to a temperature acquisition board for battery modules.

Background technique

The battery module includes many battery cells combined in series and parallel. In order to monitor the temperature of the battery module and ensure the safety of electricity use, a temperature probe needs to be installed in the module. In order to process the raw data collected by the temperature probe to obtain the temperature value at the temperature probe, a temperature acquisition chip connected to the temperature probe circuit needs to be configured. The specific parameters of the temperature probe (such as resistance value) will change due to temperature changes, and the changes in this parameter will affect the temperature acquisition chip of

Moreover, in order to make the temperature value processed by the aforementioned temperature acquisition chip equal to the actual temperature value at the temperature probe, a voltage divider resistor needs to be set in the connection circuit between the temperature probe and the temperature acquisition chip. Under the condition that the model of the temperature acquisition chip remains unchanged, if the specification of the temperature probe changes, then the voltage dividing resistor with another resistance value should be replaced to ensure that the temperature value obtained by the temperature acquisition chip is accurate.

In production, battery modules have various specifications, and battery modules with different specifications are usually equipped with different temperature probes. Every time the temperature of the battery module is detected, the original voltage dividing resistor is correspondingly removed and a new voltage dividing resistor is connected, which is very inconvenient and inefficient.

Moreover, in order to improve the convenience of temperature acquisition, some manufacturers of battery module packs usually set the above temperature acquisition chip on the acquisition board, and set the plug-in connector connected to the above temperature acquisition chip on the acquisition board, and the voltage dividing resistance directly The temperature probe of the battery module is connected through a cable or a PCB transition board to lead out the plug on the connection circuit connected to the above-mentioned collection board and connected to the temperature collection chip and the plug-in connector. During temperature measurement, the aforementioned butt plugs and the lead-out plugs are inserted into each other to realize the circuit connection between the temperature probe and the temperature acquisition chip. Although the temperature acquisition device of this structure is easy to operate, it is difficult or even impossible to replace because the voltage dividing resistor is directly integrated on the acquisition board, so it can only be used with a temperature probe of a specific specification.

SUMMARY OF THE INVENTION

The purpose of this application is to: in view of the above problems, to propose a temperature acquisition board for battery modules, which has a simple structure, is easy to use, and can be matched with temperature probes of various specifications to accurately detect the temperature of various battery modules. value.

The technical solution of this application is:

A temperature collection board for a battery module, comprising a board body, the board body is provided with:

temperature acquisition chip,

butt connectors, and

connecting the plug connector and the temperature collection circuit of the temperature collection chip;

The plate body is also provided with:

The first divider resistor,

a second voltage dividing resistor having a different resistance value from the first voltage dividing resistor, and

A selection switch for selectively connecting the first voltage dividing resistor or the second voltage dividing resistor to the temperature acquisition circuit.

On the basis of the above-mentioned technical solutions, the present application also includes the following preferred solutions:

The plate body is also provided with a third voltage dividing resistor with a different resistance value from the first voltage dividing resistor and the second voltage dividing resistor, and the selection switch can selectively switch the first voltage dividing resistor. , one of the second voltage dividing resistor and the third voltage dividing resistor is connected to the temperature collection circuit.

The resistance value of the first voltage dividing resistor is 10KΩ.

The resistance value of the second voltage dividing resistor is 100KΩ.

The selector switch includes:

switch housing,

a first terminal, a second terminal, a third terminal and a fourth terminal provided on the side of the switch housing, and

a toggle pin movably installed in the switch housing;

One end of the first voltage dividing resistor is connected to the first terminal, one end of the second voltage dividing resistor is connected to the second terminal, and the other end of the first voltage dividing resistor is connected to the first terminal. After the third terminal is connected in parallel with the other end of the second voltage dividing resistor and the fourth terminal, it is connected in series in the temperature acquisition circuit;

The first voltage dividing resistor is connected in series between the third terminal and the downstream line, and the second voltage dividing resistor is connected in series between the fourth terminal and the downstream line.

The advantages of the present application are: when using this collection board to collect the temperature of the battery in the battery module, a voltage dividing resistor with a corresponding resistance value can be selected according to the specification of the temperature probe in the battery module to connect to the connection between the butt plug and the temperature collection chip. The temperature acquisition circuit ensures that the temperature value obtained through the processing of the temperature acquisition chip is the actual temperature value of the battery module, and it is very convenient to remove and replace the voltage divider resistor.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. The drawings in the following description are only some embodiments of the present application, which are common As far as technical personnel are concerned, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a circuit board for voltage and temperature collection in an embodiment of the present application.

Among them: 1-board body, 2-temperature acquisition chip, 3-pair plug connector, 4-temperature acquisition circuit, 5-first voltage dividing resistor, 6-second voltage dividing resistor, 7-selector switch, 701-first Terminal, 702-second terminal, 703-third terminal, 704-fourth terminal, 705-dial pin, 706-switch housing.

Detailed ways

The present application will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. The present application can be implemented in many different forms, and is not limited to the implementation described in this embodiment. The following specific embodiments are provided for the purpose of facilitating a clearer and more thorough understanding of the disclosure of the present application, wherein words indicating orientation, such as up, down, left and right, are only for the positions of the illustrated structures in the corresponding drawings.

However, one skilled in the art may appreciate that specific details of one or more of these may be omitted, or that other methods, components or materials may also be employed. In some instances, some embodiments are not described or described in detail.

In addition, the technical features and technical solutions described in this document may also be combined in any suitable manner in one or more embodiments. It will be readily understood by those skilled in the art that the steps or order of operations of the methods related to the embodiments provided herein may also be changed. Therefore, any order in the figures and examples is for illustration purposes only and does not imply that a certain order is required unless it is explicitly stated that a certain order is required.

The serial numbers themselves, such as "first", "second", etc., for the components herein are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections).

Fig. 1 shows a preferred embodiment of the temperature collection board used in the battery module of the present application. Similar to the traditional structure, the circuit board also includes a board body 1, and a temperature collection chip is arranged on the board body 1 2. The butt plug 3, the temperature acquisition circuit 4 that connects the above-mentioned plug-in connector and the temperature acquisition chip, the butt plug 3 is used for plug-in connection to the lead-out plug drawn from the battery pack, so as to connect the temperature probe set in the battery pack with the above-mentioned temperature. The acquisition chip 2 is connected.

The key improvement of the present application is that the board body 1 is also provided with a selector switch 7 and two voltage divider resistors with different resistance values. A first voltage dividing resistor 5 and a second voltage dividing resistor 6 . In practical application, the operator can selectively connect the first voltage dividing resistor 5 or the second voltage dividing resistor 6 to the above-mentioned temperature collection circuit 4 by controlling the above-mentioned selection switch 7 .

Specifically, the resistance value of the first voltage dividing resistor 5 is 10KΩ, and the resistance value of the second voltage dividing resistor 6 is 100KΩ.

When using this acquisition board to collect the temperature of the battery in the battery module, a voltage dividing resistor with a corresponding resistance value can be selected according to the specifications of the temperature probe in the battery module and connected to the temperature acquisition circuit 4 between the butt plug 3 and the temperature acquisition chip 2. , so as to ensure that the temperature value obtained through the processing of the temperature acquisition chip 2 is the actual temperature value of the battery module. For example, if the temperature probe in a battery pack should match a 10KΩ voltage divider resistor, then it is necessary to control the selector switch 7 to connect the first voltage divider resistor 5 to the temperature acquisition circuit 4. When the piezoresistor 6 is connected to the temperature acquisition circuit 4, the temperature value obtained by the temperature acquisition chip 2 will be inaccurate because the voltage dividing resistor does not match the temperature probe and the temperature acquisition chip 2.

The above-mentioned selector switch 7 can adopt various structural forms, and this embodiment is specifically such a structure: the selector switch 7 includes a switch housing 706, four terminals and a dial pin 705. For the convenience of description, the aforementioned four connections are The terminals are referred to as a first terminal 701, a second terminal 702, a third terminal 703, and a fourth terminal 704, respectively.

The first terminal 701 , the second terminal 702 , the third terminal 703 and the fourth terminal 704 are all arranged on the side of the switch housing 706 , and the four are arranged apart from each other. The toggle pin 705 is movably installed in the switch housing 706 , and the toggle pin 705 has a toggle end extending out of the switch housing.

In FIG. 1, the right end of the first voltage dividing resistor 5 is connected to the first terminal 701, the right end of the second voltage dividing resistor 6 is connected to the second terminal 702, and the left end of the first voltage dividing resistor 5 is connected to the third terminal. 703 is connected in parallel with the left end of the second voltage dividing resistor 6 and the fourth terminal 704, and is connected in series in the temperature collection circuit 4

Referring to FIG. 1 , when the above-mentioned toggle pin 705 is pushed up by the operator to the first working position in FIG. 1 (shown by the dotted line), the toggle pin 704 is connected to the first terminal 701 and the third terminal 703 At the same time, it is in conductive contact and is separated from the second terminal 702 and the fourth terminal 704 . At this time, the first terminal 701 and the third terminal 703 are connected to each other through the dial pin 704, and the first voltage dividing resistor 5 is connected to the temperature collection line 4.

When the above-mentioned toggle pin 705 is toggled downward to the second working position by the operator in FIG. 1 , the toggle pin 704 is in conductive contact with the second terminal 702 and the fourth terminal 704 at the same time, and is in contact with the first terminal 701 and the third terminal 703 are separated. At this time, the second terminal 702 and the fourth terminal 704 are connected to each other through the dial pin 705 , and the second voltage dividing resistor 6 is connected to the temperature collection circuit 4 .

Obviously, in order to enable the acquisition board to match temperature probes with more specifications, a third voltage divider resistor whose resistance is neither 10KΩ nor 100KΩ can also be set on the board body 1 . The operator can select one of the aforementioned first voltage dividing resistor 5 , the second voltage dividing resistor 6 and the third voltage dividing resistor to connect to the temperature collection circuit 4 by setting other forms of the selection switch 7 .

The above temperature acquisition chip 2 is an outsourced commodity, and its model is CY8C4247LQI-BL483.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present application, and the purpose thereof is to enable people to understand the contents of the present application and implement them accordingly, and cannot limit the protection scope of the present application. All equivalent transformations or modifications made according to the spirit and essence of the main technical solutions of the present application shall be covered within the protection scope of the present application.

Claims (5)

1. A temperature collection board for a battery module, comprising a board body (1), and the board body (1) is provided with: temperature acquisition chip (2), butt connector (3), and a temperature collection circuit (4) connecting the plug-in connector and the temperature collection chip; It is characterized in that, the plate body (1) is further provided with: The first voltage divider resistor (5), a second voltage dividing resistor (6) having a resistance value different from that of the first voltage dividing resistor, and A selection switch (7) for selectively connecting the first voltage dividing resistor (5) or the second voltage dividing resistor (6) to the temperature acquisition circuit (4). 2 . The temperature collection board for a battery module according to claim 1 , wherein the board body ( 1 ) is further provided with the first voltage dividing resistor ( 5 ) and the second voltage dividing resistor ( 5 ). 3 . A third voltage dividing resistor with different resistance values of the voltage dividing resistors (6), the selection switch (7) can selectively select the first voltage dividing resistor (5), the second voltage dividing resistor (6), the third voltage dividing resistor One of the voltage dividing resistors is connected to the temperature acquisition circuit (4). 3 . The temperature collection board for a battery module according to claim 1 , wherein the resistance value of the first voltage dividing resistor ( 5 ) is 10KΩ. 4 . 4 . The temperature collection board for a battery module according to claim 3 , wherein the resistance value of the second voltage dividing resistor ( 6 ) is 100KΩ. 5 . 5. The temperature collection board for a battery module according to claim 1, wherein the selection switch (7) comprises: switch housing (706), a first terminal (701), a second terminal (702), a third terminal (703) and a fourth terminal (704) provided on the side of the switch housing, and a toggle pin (705) movably installed in the switch housing (706); One end of the first voltage dividing resistor (5) is connected to the first terminal (701), one end of the second voltage dividing resistor (6) is connected to the second terminal (702), and the The other end of the first voltage dividing resistor (5) and the third terminal (703) are connected in parallel with the other end of the second voltage dividing resistor (6) and the fourth terminal (704), and then connected in series. in the temperature collection circuit (4); When the toggle pin (705) is toggled to the first position, the toggle pin (705) is in conductive contact with the first terminal (701) and the third terminal (703) at the same time; when the When the toggle pin (705) is toggled to the second position, the toggle pin (705) is electrically connected to the second terminal (702) and the fourth terminal (704) at the same time.

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