Temperature detection device of energy storage battery pack

Abstract

The utility model relates to a temperature detection device of an energy storage battery pack. The temperature detection device comprises a battery pack and a plurality of circuit boards, the air outlet end of the cooling fan deviates from the interior of the battery box so as to dissipate heat in the battery box outwards to dissipate the battery pack; the circuit board is fixedly connected with a plurality of metal conducting strips, and the other ends of the plurality of metal conducting strips are fixedly connected with positive terminals or negative terminals of the plurality of batteries in a one-to-one manner, so that the voltage of the plurality of batteries can be acquired; a plurality of thermistors are arranged on the circuit board and cling to the metal conducting strips one to one, so that heat on the positive terminal or the negative terminal of the battery is transferred to the thermistors through the metal conducting strips, and temperature detection of the battery is realized; the plurality of metal conducting strips and the plurality of thermistors are connected with the jumper seat, and the jumper seat is connected with the detection circuit board, so that the temperature and the voltage of the battery pack are obtained; therefore, assembling and maintaining are convenient, stability is high, the structure is simple, cost is low, and the size is small.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack temperature detection, and more specifically to a temperature detection device for an energy storage battery pack. Background Art

[0002] Energy storage cabinets are a new development direction for new energy. The energy storage system perfectly solves the impact caused by the problem of temporary power shortage. When the power is sufficient, a certain amount of electric energy can be stored in the battery; when the power is short, the stored electric energy can be transmitted to the power grid to achieve peak load regulation and grid connection functions.

[0003] In the related art, the lithium iron phosphate battery used in the energy storage cabinet of the outdoor cabinet energy storage system is generally a lithium-ion battery that uses lithium iron phosphate as the positive electrode material and carbon as the negative electrode material; lithium iron phosphate batteries have a series of unique advantages such as high operating voltage, high energy density, long cycle life, low self-discharge rate, no memory effect, green environmental protection, etc., and support stepless expansion, suitable for large-scale energy storage. Multiple cells are combined into a whole through series and parallel connection, and a protection unit is added to form a battery module.

[0004] However, existing battery modules generally use cables to connect battery cells and use cables for temperature collection. There are many line layouts and connection points, and there is a risk of connection failure in individual parts, which affects the overall charging and discharging of the energy storage system. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a temperature detection device for an energy storage battery pack with a simple structure, small size, and easy assembly and maintenance in view of the above-mentioned defects of the prior art.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A temperature detection device for an energy storage battery pack is constructed, comprising a battery pack and a plurality of circuit boards; wherein the battery pack is composed of a plurality of batteries connected in series or in parallel, and the plurality of circuit boards collect the voltage and temperature of the plurality of batteries;

[0008] A plurality of metal conductive sheets are fixedly connected to the circuit board, and the other ends of the plurality of metal conductive sheets are fixedly connected one-to-one with the positive electrode terminals or negative electrode terminals of the plurality of batteries;

[0009] The circuit board is provided with a plurality of thermistors, and the plurality of thermistors are closely attached to the plurality of metal conductive sheets one by one;

[0010] A jumper seat is fixedly connected to the circuit board, a plurality of the metal conductive sheets and a plurality of thermistors are connected to the jumper seat, the jumper seat is connected to a detection circuit board, and the detection circuit board is connected to an external management system;

[0011] The battery pack and the plurality of circuit boards are all arranged in a battery box. A cooling fan is also arranged on the battery box, and an air outlet end of the cooling fan faces away from the battery box.

[0012] The temperature detection device of the energy storage battery pack described in the utility model, wherein the multiple batteries are arranged in a row and include at least the batteries in the first column and the batteries in the second column, an air duct is left between the batteries in the first column and the batteries in the second column, and the air duct is directly opposite to the air inlet end of the cooling fan.

[0013] The temperature detection device of the energy storage battery pack of the utility model, wherein the battery box is in a rectangular parallelepiped shape, the cooling fan is fixedly connected to the front side of the battery box, the front side of the battery box is also fixedly connected to a front panel, and the cooling fan is located between the front side of the battery box and the front panel;

[0014] The front panel is provided with a plurality of air outlet holes facing the air outlet end of the heat dissipation fan, and the front side surface of the battery box is provided with a plurality of air inlet holes facing the air inlet end of the heat dissipation fan.

[0015] The temperature detection device of the energy storage battery pack of the utility model, wherein the plurality of circuit boards at least include a first circuit board and a second circuit board, the first circuit board is located between the positive electrode and the negative electrode of the battery in the first column, and the second circuit board is located between the positive electrode and the negative electrode of the battery in the second column;

[0016] The battery pack is composed of a plurality of batteries connected in series.

[0017] The temperature detection device of the energy storage battery pack of the utility model, wherein the battery is connected in series with the adjacent battery via a conductive bar, and the other end of the metal conductive sheet is fixedly connected to the conductive bar.

[0018] The temperature detection device for the energy storage battery pack of the utility model, wherein a concave cavity is provided on the top surface of the battery box, and the detection circuit board is provided in the concave cavity;

[0019] The cavity opening of the concave cavity is blocked by a panel, and the panel is detachably fixedly connected to the battery box.

[0020] The temperature detection device for the energy storage battery pack described in the utility model, wherein the conductive bar is made of copper or aluminum, and the metal conductive sheet is made of one of copper, aluminum and nickel.

[0021] The temperature detection device for the energy storage battery pack of the utility model, wherein a plurality of first reinforcing ribs are fixedly connected to the left side and the right side of the battery box.

[0022] The temperature detection device of the energy storage battery pack of the utility model, wherein the battery box is composed of a concave cavity and a cover plate, the battery pack and the plurality of circuit boards are arranged in the concave cavity, and the cover plate is detachably fixedly connected to the concave cavity;

[0023] The concave cavity is arranged on the cover plate, and the panel is detachably fixedly connected to the cover plate.

[0024] The beneficial effects of the utility model are as follows: the battery pack and the plurality of circuit boards are all arranged in the battery box, and the air outlet end of the cooling fan is away from the battery box, so as to dissipate the heat in the battery box to the outside to dissipate the heat of the battery pack; the circuit board is fixedly connected with a plurality of metal conductive sheets, and the other ends of the plurality of metal conductive sheets are fixedly connected one by one with the positive electrode terminals or the negative electrode terminals of the plurality of batteries, so as to collect the voltages of the plurality of batteries;

[0025] A plurality of thermistors are arranged on the circuit board, and the plurality of thermistors are closely attached to the plurality of metal conductive sheets one by one, so that the heat on the positive electrode terminal or the negative electrode terminal of the battery is transferred to the thermistors through the metal conductive sheets, thereby realizing the temperature detection of the battery;

[0026] A jumper holder is fixedly connected to the circuit board, multiple metal conductive sheets and multiple thermistors are connected to the jumper holder, the jumper holder is connected to the detection circuit board, and the detection circuit board is connected to an external management system to obtain the temperature and voltage of the battery pack; thereby, it is easy to assemble and maintain, has high stability, and has a simple structure, low cost, and a small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0028] Figure 1 It is a three-dimensional diagram of the concave cavity of the temperature detection device of the energy storage battery pack of the preferred embodiment of the utility model;

[0029] Figure 2 It is a top view of the concave cavity of the temperature detection device of the energy storage battery pack of the preferred embodiment of the utility model;

[0030] Figure 3 It is a three-dimensional diagram of a battery box of a temperature detection device for an energy storage battery pack according to a preferred embodiment of the utility model;

[0031] Figure 4 It is a three-dimensional diagram of the cavity of the temperature detection device of the energy storage battery pack in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0033] The temperature detection device of the energy storage battery pack in the preferred embodiment of the utility model is as follows Figure 1 See also Figures 2 to 4 ; comprising a battery pack 100 and a plurality of circuit boards 200; wherein the battery pack 100 is composed of a plurality of batteries 101 connected in series or in parallel, and the plurality of circuit boards 200 collect the voltage and temperature of the plurality of batteries 101;

[0034] A plurality of metal conductive sheets 210 are fixedly connected to the circuit board 200, and the other ends of the plurality of metal conductive sheets 210 are fixedly connected one-to-one with the positive electrode terminals or negative electrode terminals of the plurality of batteries 101;

[0035] A plurality of thermistors (not shown) are disposed on the circuit board 200, and the plurality of thermistors are closely attached to the plurality of metal conductive sheets 210 one by one;

[0036] A jumper seat 220 is fixedly connected to the circuit board 200, a plurality of metal conductive sheets 210 and a plurality of thermistors are connected to the jumper seat 220, the jumper seat 220 is connected to a detection circuit board 341, and the detection circuit board 341 is connected to an external management system;

[0037] The battery pack 100 and the plurality of circuit boards 200 are all disposed in the battery box 300. The battery box 300 is also provided with a cooling fan 310, and the air outlet end of the cooling fan 310 faces away from the battery box 300.

[0038] The battery pack 100 and the multiple circuit boards 200 are all arranged in the battery box 300, and the air outlet end of the cooling fan 310 is away from the battery box 300, so as to dissipate the heat in the battery box 300 to the outside to dissipate the heat of the battery pack 100; multiple metal conductive sheets 210 are fixedly connected to the circuit board 200, and the other ends of the multiple metal conductive sheets 210 are fixedly connected to the positive electrode terminals or negative electrode terminals of the multiple batteries 101 one by one, so as to collect the voltages of the multiple batteries 101;

[0039] A plurality of thermistors are disposed on the circuit board 200, and the plurality of thermistors are closely attached to the plurality of metal conductive sheets 210 one by one, so that the heat on the positive electrode terminal or the negative electrode terminal of the battery 101 is transferred to the thermistors through the metal conductive sheets 210, thereby realizing temperature detection of the battery 101;

[0040] A jumper seat 220 is fixedly connected to the circuit board 200, multiple metal conductive sheets 210 and multiple thermistors are connected to the jumper seat 220, the jumper seat 220 is connected to the detection circuit board 341, and the detection circuit board 341 is connected to an external management system to obtain the temperature and voltage of the battery pack 100; thereby achieving easy assembly and maintenance, high stability, simple structure, low cost and small size.

[0041] like Figures 1 to 4 As shown, multiple batteries 101 are arranged in a row and include at least a first column of batteries 110 and a second column of batteries 120 (multiple batteries 101 are arranged in a matrix), and an air duct 320 is left between the first column of batteries 110 and the second column of batteries 120, and the air duct 320 is directly opposite to the air inlet end of the cooling fan 310; the cooling of multiple batteries 101 is performed through the cooperation of the cooling fan 310 and the air duct 320.

[0042] like Figures 1 to 4 As shown, the battery box 300 is in a rectangular shape, the cooling fan 310 is fixedly connected to the front side of the battery box 300, and the front side of the battery box 300 is also fixedly connected to the front panel 330, and the cooling fan 310 is located between the front side of the battery box 300 and the front panel 330;

[0043] The front panel 330 is provided with a plurality of air outlet holes 331 facing the air outlet end of the cooling fan 310, and the front side surface of the battery box 300 is provided with a plurality of air inlet holes (not shown in the figure) facing the air inlet end of the cooling fan 310. The structure is simple and has little effect on the overall structural strength of the battery box 300; it is beautiful and protects the cooling fan 310 at the same time.

[0044] like Figure 1 and Figure 2 As shown, the plurality of circuit boards 200 at least include a first circuit board 200 and a second circuit board 200, the first circuit board 200 is located between the positive electrode and the negative electrode of the first column of batteries 110, and the second circuit board 200 is located between the positive electrode and the negative electrode of the second column of batteries 120; the structure is compact, occupies a small space, and is easy to install;

[0045] The battery pack 100 is composed of a plurality of batteries 101 connected in series to meet different practical needs.

[0046] like Figures 1 to 4As shown, the battery 101 is connected in series with the adjacent battery 101 through the conductive bar 130, and the other end of the metal conductive sheet 210 is fixedly connected to the conductive bar 130; wherein the conductive bar 130 is fixedly connected to the positive terminal or the negative terminal of the battery 101, so that when a large current passes through, heat is simultaneously conducted to the metal conductive sheet 210 for thermistor to collect temperature; according to common knowledge, the terminal of the battery 101 is metal and its temperature can more truly reflect the temperature of the battery 101.

[0047] like Figure 3 and Figure 4 As shown, a concave cavity 340 is provided on the top surface of the battery box 300, and a detection circuit board 341 is provided in the concave cavity 340; the detection circuit board 341 is fixedly connected to the cavity wall of the concave cavity 340;

[0048] The cavity opening of the concave cavity 340 is blocked by a panel 342, and the panel 342 is detachably fixedly connected to the battery box 300; the structure is compact, the volume is small, and the installation and maintenance are convenient.

[0049] like Figure 1 and Figure 2 As shown, the conductive bar 130 is made of copper or aluminum, and the metal conductive sheet 210 is made of one of copper, aluminum, and nickel, which can better conduct electricity and heat.

[0050] like Figures 1 to 4 As shown, a plurality of first reinforcing ribs 350 are fixedly connected to the left and right sides of the battery box 300, and a plurality of second reinforcing ribs 360 are transversely fixedly connected inside the battery box 300, and the second reinforcing ribs 360 are located between the front row of batteries 101 and the rear row of batteries 101 and are insulated from the conductive row 130; so as to strengthen the structural strength of the battery box 300; further, air inlets 370 are opened on the left and right sides of the battery box 300 and face the first row of batteries 110 or the second row of batteries 120, so as to allow air to flow into the battery box 300 and facilitate cooling of the batteries 101.

[0051] like Figures 1 to 4 As shown, the battery box 300 is composed of a concave cavity 301 and a cover plate 302. The battery pack 100 and multiple circuit boards 200 are arranged in the concave cavity 301. The cover plate 302 is detachably fixedly connected to the concave cavity 301, so as to facilitate the placement of the battery pack 100 in the concave cavity 301.

[0052] The concave cavity 340 is disposed on the cover plate 302 , and the panel 342 is detachably fixedly connected to the cover plate 302 .

[0053] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A temperature detection device for an energy storage battery pack, comprising a battery pack and a plurality of circuit boards; characterized in that: The battery pack is composed of a plurality of batteries connected in series or in parallel, and the plurality of circuit boards collect the voltage and temperature of the plurality of batteries; A plurality of metal conductive sheets are fixedly connected to the circuit board, and the other ends of the plurality of metal conductive sheets are fixedly connected one-to-one with the positive electrode terminals or negative electrode terminals of the plurality of batteries; The circuit board is provided with a plurality of thermistors, and the plurality of thermistors are closely attached to the plurality of metal conductive sheets one by one; A jumper seat is fixedly connected to the circuit board, a plurality of the metal conductive sheets and a plurality of thermistors are connected to the jumper seat, the jumper seat is connected to a detection circuit board, and the detection circuit board is connected to an external management system; The battery pack and the plurality of circuit boards are all arranged in a battery box. A cooling fan is also arranged on the battery box, and an air outlet end of the cooling fan faces away from the battery box.

2. The temperature detection device of the energy storage battery pack according to claim 1 is characterized in that The multiple batteries are arranged in rows and include at least the first column of batteries and the second column of batteries. An air duct is left between the first column of batteries and the second column of batteries, and the air duct is directly opposite to the air inlet end of the cooling fan.

3. The temperature detection device of the energy storage battery pack according to claim 2, characterized in that: The battery box is in a rectangular shape, the cooling fan is fixedly connected to the front side of the battery box, a front panel is also fixedly connected to the front side of the battery box, and the cooling fan is located between the front side of the battery box and the front panel; The front panel is provided with a plurality of air outlet holes facing the air outlet end of the heat dissipation fan, and the front side surface of the battery box is provided with a plurality of air inlet holes facing the air inlet end of the heat dissipation fan.

4. The temperature detection device of the energy storage battery pack according to claim 2, characterized in that: The plurality of circuit boards at least include a first circuit board and a second circuit board, the first circuit board is located between the positive electrode and the negative electrode of the batteries in the first column, and the second circuit board is located between the positive electrode and the negative electrode of the batteries in the second column; The battery pack is composed of a plurality of batteries connected in series.

5. The temperature detection device of the energy storage battery pack according to claim 1, characterized in that: The battery is connected in series with the adjacent battery via a conductive bar, and the other end of the metal conductive sheet is fixedly connected to the conductive bar.

6. The temperature detection device of the energy storage battery pack according to claim 3, characterized in that: A concave cavity is provided on the top surface of the battery box, and the detection circuit board is provided in the concave cavity; The cavity opening of the concave cavity is blocked by a panel, and the panel is detachably fixedly connected to the battery box.

7. The temperature detection device of the energy storage battery pack according to claim 5, characterized in that: The conductive bar is made of copper or aluminum, and the metal conductive sheet is made of one of copper, aluminum and nickel.

8. The temperature detection device of the energy storage battery pack according to claim 1, characterized in that: A plurality of first reinforcing ribs are also fixedly connected to the left side and the right side of the battery box.

9. The temperature detection device of the energy storage battery pack according to claim 6, characterized in that: The battery box is composed of a concave cavity and a cover plate, the battery pack and the plurality of circuit boards are arranged in the concave cavity, and the cover plate is detachably fixedly connected to the concave cavity; The concave cavity is arranged on the cover plate, and the panel is detachably fixedly connected to the cover plate.

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