Temperature control device of DEMS battery unit

Abstract

The utility model relates to a temperature control device of a DEMS battery unit. The temperature control device comprises an outer heat insulation barrel, an inner barrel, a barrel cover, a sealing ring, a hoop, a heating sleeve and a temperature controller, the inner barrel is arranged in the outer heat preservation barrel and used for containing a battery unit, and the edge of a barrel opening of the inner barrel extends outwards to be provided with a first annular boss; the barrel cover covers the first annular boss; the sealing ring is arranged between the first annular boss and the barrel cover; the hoop is buckled and fixed outside the first annular boss and the barrel cover; the heating sleeve is sleeved outside the outer insulation barrel; and the temperature controller is electrically connected with the heating sleeve. The heating sleeve is electrified and heated through the temperature controller, and the temperature of the heating sleeve is controlled, so that the temperature of the outer heat preservation barrel is controlled, the temperature of the inner barrel and the temperature of the battery unit placed in the inner barrel are further controlled, and the battery unit can be tested under the specific constant-temperature condition.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery testing, in particular to a temperature control device for a DEMS battery unit. Background Art

[0002] In-situ differential electrochemical mass spectrometer (DEMS) is an instrument that combines an electrochemical reaction cell with a mass spectrometer to perform qualitative and quantitative analysis of the gas or volatile products produced by the electrochemical reaction under the power of vacuum pressure difference. The instrument has a time resolution of milliseconds and is widely used in in-situ testing of batteries and electrocatalysis. It is an important tool for studying the gas production mechanism of electrochemical reactions.

[0003] The common in-situ differential electrochemical mass spectrometer is mainly composed of a carrier gas system, a vacuum system, a battery cell and other components. The battery cell has positive and negative terminal terminals for connection for charging and discharging. The battery cell also has an air inlet and an air outlet for connection with a carrier gas pipeline. The gas or volatile product generated in the battery cell is transported to the mass spectrometer for detection and analysis through the carrier gas. At present, there is no temperature control device for the battery cell in the DEMS instrument, and the temperature of the battery cell cannot be controlled. Therefore, it is affected by the temperature during the DEMS test process. There are the following problems: (1) Some gas evolution reactions are sensitive to temperature, and temperature fluctuations make it difficult to accurately quantify the gas, especially different data results may be obtained when testing at different time periods during the day / night; (2) When the charging current is large, it may cause the battery temperature to rise too fast, which has an adverse effect on the battery system; (3) In addition, some battery reactions need to be carried out at a certain temperature, which is currently impossible. Therefore, in order to solve the above problems, it is necessary to develop a temperature control device for the DEMS battery cell. Utility Model Content

[0004] The main purpose of the utility model is to propose a temperature control device for a DEMS battery unit, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A temperature control device for a DEMS battery unit, comprising:

[0007] External insulation barrel;

[0008] An inner barrel is placed inside the outer insulation barrel and is used to place the battery unit. A first annular boss is provided on the edge of the barrel opening of the inner barrel extending outward.

[0009] A barrel cover, which is disposed on the first annular boss;

[0010] A sealing ring, disposed between the first annular boss and the barrel cover;

[0011] A clamp, fastened and fixed to the first annular boss and the outside of the barrel cover;

[0012] A heating jacket, which is mounted outside the outer insulation barrel;

[0013] A temperature controller is electrically connected to the heating jacket.

[0014] Preferably, the barrel mouth of the inner barrel is provided with a first groove;

[0015] The bottom of the barrel cover is provided with a second groove corresponding to the first groove;

[0016] A stainless steel ring is clamped between the first groove and the second groove.

[0017] Preferably, a second annular boss is provided in the middle of the outer side of the stainless steel ring, the second annular boss is used for sleeve-mounting a sealing ring, and the thickness of the second annular boss is smaller than that of the sealing ring.

[0018] Preferably, the barrel cover is provided with two wiring holes and two air holes.

[0019] Preferably, the clamp is a three-section clamp.

[0020] Preferably, the temperature controller is an adjustable digital temperature controller.

[0021] The utility model provides a temperature control device for a DEMS battery unit, which has the following beneficial effects:

[0022] The temperature controller is used to energize and heat the heating sleeve, and the temperature of the heating sleeve is controlled, thereby controlling the temperature of the outer insulation barrel, and then controlling the temperature of the inner barrel and the battery cells placed in the inner barrel, so that the battery cells can be tested under specific constant temperature conditions. The sealing ring is used to seal the annular boss and the barrel cover, which can minimize the contact between the battery cells and the outside air, eliminate the influence of the external environment on the battery cells, and ensure the accuracy of the temperature control of the battery cells. The first annular boss and the barrel cover are fastened and fixed by a clamp, which is convenient for fixing or removing the barrel cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an exploded diagram of the temperature control device of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the temperature control device of the utility model;

[0025] Figure 3 It is a cross-sectional view of the temperature control device of the utility model;

[0026] Figure 4For this utility model Figure 3 Enlarged view of point A in the middle.

[0027] In the figure: 1, outer insulation barrel; 2, inner barrel; 21, first annular boss; 22, first groove; 3, barrel cover; 31, second groove; 4, sealing ring; 5, clamp; 6, heating sleeve; 7, temperature controller; 8, stainless steel ring; 81, second annular boss. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the utility model.

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the 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 scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Example, refer to Figure 1-3, a temperature control device for a DEMS battery unit, comprising an outer insulation barrel 1, an inner barrel 2, a barrel cover 3, a sealing ring 4, a clamp 5, a heating sleeve 6 and a temperature controller 7;

[0033] The inner barrel 2 is placed in the outer insulation barrel 1 for placing battery cells, and a first annular boss 21 is extended outward from the edge of the barrel mouth of the inner barrel 2; the barrel cover 3 is covered on the first annular boss 21; the sealing ring 4 is arranged between the first annular boss 21 and the barrel cover 3; the clamp 5 is fastened and fixed to the first annular boss 21 and the outside of the barrel cover 3; the heating sleeve 6 is sleeved on the outside of the outer insulation barrel 1; the temperature controller 7 is electrically connected to the heating sleeve 6.

[0034] During the DEMS battery test, the battery cell is placed in the inner barrel 2, and the barrel cover 3 is placed on the first annular boss 21 of the inner barrel 2, wherein a sealing ring 4 is provided between the first annular boss 21 and the barrel cover 3, and the sealing ring 4 seals the annular boss and the barrel cover 3, and then the first annular boss 21 and the barrel cover 3 are buckled and fixed by the clamp 5, and finally the heating sleeve 6 is powered on and heated by the temperature controller 7, and the temperature of the heating sleeve 6 is controlled, so as to control the temperature of the outer insulation barrel 1, and then control the temperature of the inner barrel 2 and the battery cell placed in the inner barrel 2, so that the battery cell can be tested under specific constant temperature conditions, wherein the sealing ring 4 is used to seal the annular boss and the barrel cover 3, which can minimize the contact between the battery cell and the outside air, eliminate the influence of the outside environment on the battery cell, and ensure the accuracy of the temperature control of the battery cell, and the first annular boss 21 and the barrel cover 3 are buckled and fixed by the clamp 5, so as to facilitate the fixing or removal of the barrel cover 3.

[0035] Reference Figure 4 In a specific embodiment, the barrel mouth of the inner barrel 2 is provided with a first groove 22; the bottom of the barrel cover 3 is provided with a second groove 31 corresponding to the first groove 22; and a stainless steel ring 8 is clamped between the first groove 22 and the second groove 31.

[0036] Before installing the barrel cover 3, first put the stainless steel ring 8 into the first groove 22, and then align the second groove 31 of the barrel cover 3 with the stainless steel ring 8 and then install the barrel cover 3, so that the barrel cover 3 and the first annular boss 21 are aligned through the stainless steel ring 8, and the barrel cover 3 and the first annular boss 21 will not move relative to each other.

[0037] In a specific embodiment, the outer middle part of the stainless steel ring 8 has a second annular boss 81, and the second annular boss 81 is used to sleeve the sealing ring 4, fix the position of the sealing ring 4, and prevent the sealing ring 4 from shifting. The thickness of the second annular boss 81 is smaller than that of the sealing ring 4, ensuring that the barrel cover 3 and the first annular boss 21 can squeeze the sealing ring 4 against each other to achieve a sealing effect.

[0038] In a specific embodiment, the barrel cover 3 is provided with two wiring holes and two air holes. The two wiring holes are used to insert wires to connect the positive and negative terminal terminals of the battery cells, and the two air holes are used to insert gas carrier pipes to respectively connect the air inlet and outlet of the battery cells.

[0039] In a specific embodiment, the clamp 5 is a three-section clamp.

[0040] In a specific embodiment, the temperature controller 7 is an adjustable digital temperature controller, and both the three-section clamp and the adjustable digital temperature controller are existing products.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temperature control device for a DEMS battery unit, characterized in that: include External insulation barrel; An inner barrel is placed inside the outer insulation barrel and is used to place the battery unit. A first annular boss is provided on the edge of the barrel opening of the inner barrel extending outward. A barrel cover, which is disposed on the first annular boss; A sealing ring, disposed between the first annular boss and the barrel cover; A clamp, fastened and fixed to the first annular boss and the outside of the barrel cover; A heating jacket, which is mounted outside the outer insulation barrel; A temperature controller is electrically connected to the heating jacket.

2. A temperature control device for a DEMS battery unit according to claim 1, characterized in that: The barrel mouth of the inner barrel is provided with a first groove; The bottom of the barrel cover is provided with a second groove corresponding to the first groove; A stainless steel ring is clamped between the first groove and the second groove.

3. A temperature control device for a DEMS battery unit according to claim 2, characterized in that: A second annular boss is provided in the middle of the outer side of the stainless steel ring. The second annular boss is used for sleeve-mounting a sealing ring. The thickness of the second annular boss is smaller than that of the sealing ring.

4. A temperature control device for a DEMS battery unit according to claim 1, characterized in that: The barrel cover is provided with two wiring holes and two air connection holes.

5. A temperature control device for a DEMS battery unit according to claim 1, characterized in that: The clamp is a three-section clamp.

6. A temperature control device for a DEMS battery unit according to claim 1, characterized in that: The temperature controller is an adjustable digital temperature controller.

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