An experimental device for testing the influence of thermal diffusion of a parallel battery pack

Abstract

The present invention provides a test device for testing the influence of thermal diffusion of a parallel battery pack, comprising a base and a battery fixing rack; a linear chute is provided on the upper surface of the base, and there are two linear chutes, which are arranged in parallel with each other; both the front and rear ends of the bottom of the battery fixing rack are provided with sliders, and the two sliders slide correspondingly in the two linear chutes. A card slot for placing the battery to be tested is provided on the top of the battery fixing rack, and there are multiple battery fixing racks; a plurality of Hall current sensors are provided on the front and rear surfaces of the base. The test device for testing the influence of thermal diffusion of a parallel battery pack according to the present invention realizes the test requirements for the number of battery monomers and the setting of the spacing during the test process of the influence of thermal diffusion of the parallel battery pack, can protect the sensors when the battery explodes during the test, greatly improves the efficiency of the test, and reduces the test cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy battery testing, and in particular relates to a test device for testing the thermal diffusion effect of a parallel battery pack. Background Art

[0002] With the popularization and promotion of new energy vehicles, the ownership of new energy vehicles in China is close to 5 million. Subsequently, the frequency of new energy vehicle fires has increased. The high frequency of new energy vehicle fires has, on the one hand, reduced consumers' confidence in purchasing, and on the other hand, also caused many secondary hazards, including surrounding facilities, other vehicles and drivers, etc. Most of the reasons for electric vehicle fires are due to problems in the key component battery system, resulting in thermal diffusion inside the battery system, and then causing the entire vehicle to burn. The thermal diffusion phenomenon is more caused by thermal runaway of a single cell or a module in the battery system. Therefore, it is essential to study the influence of single cells or modules inside the battery system on thermal diffusion, and there is an urgent need for a convenient and accurate related test device. Summary of the Invention

[0003] In view of this, the present invention aims to provide a test device for testing the thermal diffusion effect of a parallel battery pack, which can meet the test requirements for the number of battery monomers and spacing setting during the test of the thermal diffusion effect of the parallel battery pack, protect the sensors when the battery explodes during the test, greatly improve the test efficiency, and reduce the test cost.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A test device for testing the thermal diffusion effect of a parallel battery pack includes a base and a battery fixing rack; two linear chutes are provided on the upper surface of the base, and the two linear chutes are arranged in parallel; both the front and rear ends of the bottom of the battery fixing rack are provided with sliders, and the two sliders slide in the two linear chutes correspondingly. A card slot for placing the battery to be tested is provided at the top of the battery fixing rack, and a plurality of battery fixing racks are provided; a plurality of Hall current sensors are provided on the front and rear surfaces of the base.

[0006] Further, handles are provided at both the left and right ends of the base.

[0007] Further, scales are correspondingly provided on the outer edges of the tops of the two linear chutes.

[0008] Further, five battery fixing racks are provided.

[0009] Further, the battery fixing rack is in an I-shaped shape.

[0010] Further, a heat insulation layer is provided at the bottom of the base.

[0011] Compared with the prior art, a test device for testing the thermal diffusion effect of a parallel battery pack according to the present invention has the following advantages:

[0012] A test device for testing the thermal diffusion effect of a parallel battery pack according to the present invention can accurately set the distance between multiple batteries, meet the test requirements of different battery packs, and solve the problems of inaccurate distance setting between batteries and time-consuming and laborious construction of the test platform when testing the battery pack in the prior art. Further, a Hall current sensor can be used to collect the current of the connecting cable between the batteries, changing the problem that in the prior test, a Hall current sensor needs to be manually installed during current collection, resulting in low test efficiency and easy damage to the sensor during battery test explosion. In addition, it is also convenient to trigger the battery monomers in different ways. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0014] In the drawings:

[0015] Figure 1 is a schematic structural diagram of a test device for testing the thermal diffusion effect of a parallel battery pack according to an embodiment of the present invention;

[0016] Figure 2 is a front view schematic diagram of a test device for testing the thermal diffusion effect of a parallel battery pack according to an embodiment of the present invention;

[0017] Figure 3 is a top view schematic diagram of a test device for testing the thermal diffusion effect of a parallel battery pack according to an embodiment of the present invention;

[0018] Figure 4 is a right view schematic diagram of a test device for testing the thermal diffusion effect of a parallel battery pack according to an embodiment of the present invention.

[0019] Description of the reference numerals:

[0020] 1 - base; 2 - linear chute; 3 - battery fixing bracket; 31 - card slot; 4 - scale; 5 - handle; 6 - Hall current sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0024] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0025] As Figures 1 - 4 shown, a test device for testing the thermal diffusion effect of a parallel battery pack includes a base 1 and a battery fixing frame 3; two linear chutes 2 are provided on the upper surface of the base 1, and the two linear chutes 2 are arranged in parallel; sliders are provided at both the front and rear ends of the bottom of the battery fixing frame 3, and the two sliders slide correspondingly in the two linear chutes 2. A card slot for placing the battery to be tested is provided at the top of the battery fixing frame 3, and a plurality of battery fixing frames 3 are provided; a plurality of Hall current sensors 6 are provided on the front and rear surfaces of the base 1.

[0026] In this embodiment: According to the number of single cells to be tested, a corresponding number of battery fixing frames 3 are set. Each single cell is arranged in the card slot at the top of the corresponding battery fixing frame 3. At this time, the battery fixing frame 3 is moved in the linear chute 2, and the operator can freely set the distance between each single cell to meet the design requirements of the test. Further, the connecting cables between the batteries are passed through the Hall current sensors 6 at appropriate positions. The external acquisition device can be directly connected to the Hall current sensors 6 to acquire the current values required for the test. At the same time, temperature and voltage acquisition sensors can also be set at the batteries on the battery fixing frame 3.

[0027] Since the Hall current sensor 6 is arranged on the front and rear surfaces of the base 1, when the parallel battery pack undergoes heat diffusion during the test and the battery explodes, the Hall current sensor 6 can be protected, thereby effectively reducing the test cost.

[0028] like Figures 1 - 4 As shown, handles 5 are provided at both left and right ends of the base 1.

[0029] like Figures 1 - 4 As shown, scales 4 are correspondingly provided on the outer edges of the tops of the two linear slideways 2 .

[0030] The test personnel can directly adjust the distance between the two single cells by means of the fixed scale 4 to meet the design requirements of the test at any time.

[0031] like Figures 1 - 4 As shown, five battery holders 3 are provided.

[0032] like Figures 1 - 4 As shown, the battery holder 3 is in an I-shape.

[0033] like Figures 1 - 4 As shown, a temperature insulation layer is provided at the bottom of the base 1.

[0034] During the use of this test device, the base 1 should be kept on a flat surface to keep the base 1 stable;

[0035] When using this test device, try to avoid dropping or hitting it due to human factors;

[0036] During the use of this test device, the battery holder 3 should be kept slidable to avoid forced impact and pulling;

[0037] During the use of the test device, it is necessary to avoid prolonged burning time to prevent the base 1 from being deformed.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An experimental device for testing the thermal diffusion effect of a parallel battery pack, Characterized in that: It includes a base (1) and a battery fixing rack (3); on the upper surface of the base (1), there are linear chutes (2), and there are two linear chutes (2), and the two linear chutes (2) are arranged in parallel; at the front and rear ends of the bottom of the battery fixing rack (3), there are sliders, and the two sliders slide correspondingly in the two linear chutes (2), and at the top of the battery fixing rack (3), there is a card slot for placing the battery to be tested, and there are multiple battery fixing racks (3); on the front and rear surfaces of the base (1), there are multiple Hall current sensors (6); On the outer edges of the tops of the two linear chutes (2), there are corresponding scales (4); The battery fixing rack (3) is in the shape of an I-beam; According to the number of single cells to be tested, set the corresponding number of battery fixing racks (3). Each single cell is arranged in the card slot at the top of the corresponding battery fixing rack (3), and at this time, move the battery fixing rack (3) in the linear chute (2).

2. An experimental device for testing the thermal diffusion effect of a parallel battery pack according to claim 1, Characterized in that: There are handles (5) at both the left and right ends of the base (1).

3. An experimental device for testing the thermal diffusion effect of a parallel battery pack according to claim 1, Characterized in that: There are five battery fixing racks (3).

4. An experimental device for testing the thermal diffusion effect of a parallel battery pack according to claim 1, Characterized in that: There is a heat insulation layer at the bottom of the base (1).

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